PERFORMANCE · QUALITY · CUSTOMER SERVICE
REVISED: JANUARY 1, 2024
I N S T A L L A T I O N I N S T R U C T I O N S
U S E & C A R E G U I D E
P 3 2 0 0 S E R I E S
R A N G E H O O D S
P32303RC
P32306RC
P32363RC
P32366RC
P32423RC
P32426RC
P32487RC
20"
20"
20"
20"
20"
20"
20"
√
√
√
√
√
√
√
390
600
390
600
390
600
780
MODEL
FRONT TO
BACK
WIDTH CFM
30"
30"
36"
36"
42"
42"
48"
3-SPEED
INTERNAL
BLOWER
Before beginning installation, please thoroughly read and become familiar with these instructions. Installation
and service must be completed by a qualified installer. Failure to properly install this product may void the
warranty.
Installer:
Owner:
Please leave Installation Instructions with the range hood.
Please keep Installation Instructions for local electrical inspector’s use and for future reference.
WARNINGS:
IMPORTANT:
TIPS:
Must be followed carefully to avoid personal injury.
Must be followed carefully to avoid damage and incorrect installation.
Contains helpful information to facilitate installation.
WARNING! TO REDUCE THE RISK OF FIRE, ELECTRICAL SHOCK, OR INJURY TO PERSONS OBSERVE THE FOLLOWING:
a) Use this unit only in the manner intended by the manufacturer. If you have any questions, please contact the
manufacturer at the address or telephone number listed in the warranty.
b) Before servicing or cleaning unit, switch power off at service panel, lock service panel, and lock the service
disconnection means to prevent power from being switched on accidentally. When the service disconnecting means
cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel.
CAUTION: For general ventilating use only. Do not use to exhaust hazardous or explosive materials and vapors.
READ AND SAVE THESE INSTRUCTIONS
* * * A T T E N T I O N * * *
P L E A S E R E M O V E T H E R I G H T S I D E B A F F L E F I L T E R
T O L O C A T E Y O U R N E W R E M O T E C O N T R O L .
WARNING! TO REDUCE THE RISK OF A RANGE TOP GREASE FIRE:
a) Never leave surface units unattended at high settings. Boilovers cause smoking and greasy spillovers that may ignite.
Heat oils slowly on low or medium settings.
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CAUTION:
RECOMMENDATIONS:
To reduce the risk of fire and to properly exhaust air, be sure to duct air outside. Do not vent exhaust air
into spaces within walls, ceilings, cabinets or into attics, crawl spaces, or garages.
WARNING! TO REDUCE THE RISK OF FIRE, ELECTRICAL SHOCK, OR INJURY TO PERSONS OBSERVE THE FOLLOWING:
a) Installation work and electrical wiring must be done by qualified person(s) in accordance with all applicable codes
and standards, including fire-rated construction codes and standards.
b) Sufficient air is needed for proper combustion and exhausting of gasses through the flue (chimney) of fuel burning
equipment to prevent back drafting. Follow the heating equipment manufacturer's guidelines and safety standards
such as those published by the National Fire Protection Association (NFPA) and the American Society for Heating,
Refrigeration and Air Conditioning Engineers (ASHRAE) and the local code authorities.
c) When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
d) Ducted fans must always be vented to the outdoor.
INSTALLATION INSTRUCTIONS
WARNING! TO REDUCE THE RISK OF INJURY TO PERSONS IN THE EVENT OF A RANGE GREASE FIRE, OBSERVING THE
FOLLOWING:
Consult a licensed ventilation contractor or qualified technician for proper installation of exhaust ducting. Locate the
cooking area for minimum cross drafts-away from doors and windows, when possible.
1.
Ducts must be of adequate size and duct runs should be as short as possible. Where turns are necessary, keep
turning radius as large and as smooth as possible.
2.
The ducting must be air tight. Use a minimum of 2 sheet metal screws at every duct joint. Then, seal the duct joints
with high quality duct tape.
3.
Do not use this unit with any solid-state speed control device. 4.
This unit must be grounded. 5.
WARNING! TO REDUCE THE RISK OF FIRE, USE ONLY METAL DUCTWORK.
b) Always turn hood ON when cooking at high heat or when flambeing food (i. e. Crepes Suzette, Cherries Jubilee,
Peppercorn Beef Flambe’).
c) Clean ventilating fans frequently. Grease should not be allowed to accumulate on fan or filter.
d) Use proper pan size. Always use cookware appropriate for the size of the surface element.
TO ACCESS THE INSTALLATION INSTRUCTIONS FOR YOUR TRADE-WIND® PRODUCT,
PLEASE SCAN THE QR CODE:
a) Smother flames with a close-fitting lid, cookie sheet, or metal tray, then turn off the burner. Be careful to prevent
burns. If the flames do not go out immediately, evacuate and call the fire department.
b) Never pick up a flaming pan -- you may be burned.
c) Do not use water, including wet dishcloths or towels. A violent steam explosion will result.
d) Use an extinguisher, only if:
1. You know you have a Class ABC extinguisher and you already know how to operate it.
2. The fire is small and contained in the area where it started.
3. The fire department is being called.
4. You can fight the fire with your back to an exit.
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P32303RC
P32306RC
P32363RC
P32366RC
P32423RC
P32426RC
P32487RC
20"
20"
20"
20"
20"
20"
20"
√
√
√
√
√
√
√
390
600
390
600
390
600
780
2
2
2
2
2
2
3
√
√
√
√
√
√
√
√
√
√
√
√
√
√
7"
8"
7"
8"
7"
8"
10"
√
√
√
√
√
√
√
MODEL
FRONT TO
BACK
WIDTH CFM
LED
LIGHTS
S/S BAFFLE
FLITERS
REMOTE
CONTROL
ELECTRONIC
TOUCH
CONTROL
DUCT
COLLAR
30"
30"
36"
36"
42"
42"
48"
COLOR
S/S
S/S
S/S
S/S
S/S
S/S
S/S
3-SPEED
INTERNAL
BLOWER
PART 1: PLANNING THE INSTALLATION
CAUTION:
1. For general ventilating use only. Do not use to exhaust hazardous or explosive materials and vapors.
2. To reduce the risk of fire and to properly exhaust air, the hood must be exhausted to outside air. Never exhaust into a
wall, an attic or a concealed area in the building. This can create a potential hazard.
3. Consult a licensed ventilation contractor or qualified technician for proper installation of exhaust ducting.
4. Locate the cooking area for minimum cross drafts—away from doors and windows, when possible.
5. Ducts must be of adequate size and duct runs should be as short as possible. Where turns are necessary, keep
turning radius as large and as smooth as possible.
6. The ducting must be air tight. Use a minimum of 2 sheet metal screws at every duct joint. Then, seal the duct joints
with high quality duct tape.
7. Only use ductwork constructed of materials deemed acceptable by state, municipal and local codes.
8. Plan the installation so that all minimum clearances are met or exceeded. Dimensions shown provide minimum
clearances, unless otherwise specified.
DUCT COVER
*Included for ceilings 8' to 10'
DUCT COVERS: MODEL #: PDC3230, PDC3236,
PDC3242, PDC3248
*Sold separately for ceilings 10' to 12'
RANGE HOODS
OPTIONAL DUCTLESS CONVERSION KIT MODEL
#: 5BL-33-300-DCK1 (390 CFM MODELS ONLY)
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PART 2: SECURING THE HOOD
MOUNTING HOLES:
NOTE: DRILLING THROUGH STAINLESS STEEL REQUIRES A TITANIUM BIT. BE CAREFUL NOT TO DRILL THROUGH
FILTER BRACKETS, ELECTRICAL COMPONENTS OR UL LABEL. Because the Trade-Wind® H3200 Series range hood was
designed for all applications, no mounting holes have been pre-drilled. This allows the hood to be attached in the areas
of the cabinet or wood hood canopy that have proper wood frame support. The hood should be attached to the wood
framing through the top, side, or back. Remove the filters. Mark and drill screw holes through the hood as required.
Secure the hood by driving screws (provided by others) through the screw holes.
If the Trade-Wind® hood is installed as a liner for a wood hood or custom hood, proper installation of the hood as a liner
is directly related to the material from which the custom canopy is constructed. You must provide structural framing and
tight backing in the areas in which you are securing the liner inside your custom canopy. Failure to do so could distort
and damage the hood and void the warranty.
IMPORTANT:
WARNING: FOLLOWING ARE MANUFACTURER'S SUGGESTIONS. ALWAYS OBSERVE LOCAL
BUILDING CODES.
For maximum ventilation performance, the bottom of the hood or liner should be 30 - 36 inches (76. 2 - 91. 4 cm) above
the cooking surface (minimum is 24”). This would typically result in the bottom of the hood being 66 - 72 inches (167. 6 -
182. 9 cm) above the floor. These dimensions provide for safe and efficient operation of the hood. Always observe local
building codes.
Ensure that the power supply is disconnected before proceeding. Verify that the power supply matches the ratings
found on the appliance data label before proceeding. The complete appliance must be properly grounded at all times
when electrical power is applied. Do not ground the appliance with the neutral (white) house supply wire. A separate
ground wire must be utilized. Failure to complete electrical connections properly may result in damaged or non-
functional systems. Follow instructions carefully to ensure proper installation.
It is the owner’s responsibility to ensure that a qualified person performs the electrical connection of this
appliance. The electrical installation, including minimum supply wire size, must comply with the National
Electric Code ANSI/NFPA 70-1990 (or latest revision) and local codes and ordinances. A copy of this standard may
be obtained from:
National Fire Protection Association, 1 Batterymarch Park, Quincy, Massachusetts 02269-9101
INSTRUCTIONS: A 15 to 20 amp electrical service is recommended for proper electrical supply. Always observe local
building codes. Always use a dedicated circuit.
IMPORTANT: COPY THIS PAGE TO YOUR ELECTRICAL INSTALLER.
PART 3: ELECTRICAL CONNECTION
CAUTION:
The neutral wire (usually white) must connect to the same neutral wire that comes from the electrical
panel.
WARNING:
BLACK
WHITE
GREEN
120 VOLT AC FROM ELECTRICAL PANEL (USUALLY BLACK) TO LINER
NEUTRAL FROM ELECTRICAL PANEL (USUALLY WHITE) TO LINER
GROUND FROM ELECTRICAL PANEL (USUALLY GREEN) TO LINER
WIRING DETAILS
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PART 4: USE AND CARE
WARNING:
Do not operate the blower/ventilator system without the filters in place, or with dirty, grease laden
filters.
CAUTION:
The edges of the stainless steel are extremely sharp. To ensure safety, wear gloves when handling all
parts.
Eliminate air currents in the liner vicinity by shutting nearby windows and doors, turning off ceiling fans and adjusting the
adjacent heating and air conditioning outlets if necessary. Place your largest pans on the rear burners whenever possible.
Clean filters and grease laden surfaces often to improve efficiency. Always use lids on cookware to retain heat and
moisture. Minimize the amount of liquid used to cook food. Select cookware of proper size, material and construction for
the cooking task being performed.
ENERGY SAVING TIPS:
Always activate the ventilator when using cooking appliances. For best performance, turn on the blower a few minutes
before starting to cook to establish an airflow pattern within the room. To use the electronic touch control, touch the
button that corresponds to the desired speed. To turn off blower, touch the illuminated speed button again. The
electronic light control comes on when touched, touch again for light off.
OPERATING CONTROLS:
Each filter has two aluminum cylindrical knobs, one towards the rear and one towards the front. The front & rear knobs
are only for grasping and are permanently connected to the filter. To remove the filter, grasp the front & rear knobs, pull
the filter towards the front of the hood until the back of the filter drops down. Grasping the filter, remove it from the
front by now pulling it out of the front channel. For visual instructions on how to remove the filters, visit our
YouTube Channel: https://www. youtube. com/channel/UCwVIbi_9hbuIATTYvz43oBA.
FILTER REMOVAL:
DIAGRAM 1: ALL MODELS
WITH FACTORY INSTALLED
INTERNAL MOTOR/BLOWER.
H O O D
GREEN
WHITE
120V BLACK
HOUSE ELECTRICAL PANEL
Proper cleaning is necessary to maintain performance and appearance, while also ensuring safe operation. The
frequency of cleaning should be according to the type and amount of cooking. Best results will be achieved by cleaning
soiled components as soon as possible. Filters must be cleaned regularly.
We recommend washing filters by placing them in the bottom rack of a dishwasher. Locate the holes on the sides of the
filter. Put filter in dishwasher with holes facing up, so detergent can enter filters. Dry the filters completely before using
again. Rinse and dry with a soft lint-free cloth. Always wipe stainless steel surfaces with the grain. Never wipe across the
grain. After cleaning, reinstall the filters carefully. Most common scrubber type pads will scratch the hood.
CARE AND CLEANING:
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CAUTION:
If a commercially available stainless steel cleaner is used, it is important to read the labels for chlorine
compounds. Chlorine is a corrosive substance, DO NOT USE. Follow polish manufacturer’s instructions.
TRADE-WIND® products are designed for MR16/GU10 LED light bulbs. They can be purchased at most home or grocery
stores. The bulbs provided with the unit are 120V, 5 watts, 500 lumens, and 3000K (natural warm white color
temperature). To remove the light bulbs, press your palm into the lens face of the bulb and turn a ¼ turn to the
left. The bulb should unlock from its socket, and pop out. If you need to get more leverage on the bulb, you can
purchase a suction cup with a ring on it at your local hardware store.
LED LIGHT BULBS:
The diagram to the left shows all functions of the remote. Push the speed or light
buttons once to turn on; push the same button a second time to turn off. You can
use the “off” button to power off the lights and blower simultaneously.
The “5 minute delay auto off” button can be pressed when the blower is on at any
speed. The blue light behind the speed button will blink showing that this feature
has been activated. It will continue to blink for 5 minutes and then the blower will
shut off automatically. If you press the “5 minute delay auto off” button again the
blinking on the speed button stops and the blower has returned to manual mode.
If you would like to mount the remote to any surface near your range, Velcro pieces
have been provided. Peel and stick one piece to back of remote, and the other to
desired surface.
EXPLAINING THE REMOTE
If battery in remote needs replacing, use a CR2025 watch battery. These are very common and easy to find. To access, look
to the bottom end of the remote; push release to the right, and slide battery tray out.
RANGE OF REMOTE CONTROL
SIDE VIEW: FRONT VIEW:
30"
30"
60"
The infrared transmitter at the top of the
remote must be pointed in the direction of
the electronic control at the right front of
your hood. Range distance will vary
depending on your installation, but see
diagram below for approximate range area.
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We endeavor to incorporate the best technology provided to our industry, in
manufacturing the TRADE-WIND® products, therefore, we reserve the right to
change models, mode of operation, and specification without prior notice.
PERFORMANCE · QUALITY · CUSTOMER SERVICE
W A R R A N T Y
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8 0 0 W E S T G R A N T S T R E E T
P H O E N I X , A Z 8 5 0 0 7
1 - 8 0 0 - 9 5 5 - 5 7 3 7
6 0 2 - 9 0 0 - 8 5 0 0
T - W U S A . C O M
MA D E IN PH OEN I X , A Z USA
WARRANTY REVISED: JANUARY 1, 2023
TRADE-WIND Manufacturing, LLC® has a policy of continuous improvements and
reserves the right to modify (at any time without notice) any or all of its products,
features, designs, components and specifications. For further information on
installation and wiring, see the installation instructions included with the product or
visit us on the web.
T R A D E - W I N D ® V E N T I L A T I O N P R O D U C T S
For more information, please contact your dealer or your TRADE-WIND® representative.
What IS Covered:
TRADE-WIND Manufacturing, LLC® warrants its TRADE-WIND® Ventilation Products to the original user to
be free of defects in materials and workmanship for three (3) years from the date of purchase.
TRADE-WIND Manufacturing, LLC®, at its option, will repair or replace the complete unit or any defective
component without charge. This warranty may be voided if any unauthorized service, alterations, or
repairs are made to the product.
What is NOT Covered:
Normal maintenance and service of any product that has been subject to misuse, negligence, accident,
or installation inconsistent with the recommended TRADE-WIND® Installation Instructions and TRADE-
WIND® Best Practices Guidelines.
Product used other than for normal in-home use or products used outside of the United States and
Canada.
Damage to the product caused by accident, fire, flood, or other acts of God.
Service calls to educate the customer in the proper use and care of the product, change fuses, or to
reset the circuit breakers.
Service calls to correct faulty installation, such as performance issues relating to improperly sized
ducting or restrictive roof caps, are not covered and will, by default, be charged back to the
Homeowner.
Light bulbs are not covered under warranty.
TRADE-WIND Manufacturing, LLC® disclaims and excludes any liability for implied warranties or for
incidental or consequential damages wherever permitted by law. There are no implied warranties of
merchantability or fitness for a particular use or purpose. This warranty gives you specific legal rights, and
you may also have other rights, which vary from state to state.
For Service: If you need service on your TRADE-WIND® Ventilation Product, visit our website at: www. t-
wusa. com and click on the warranty tab. Fill out the simple form providing the model number, serial
number, date of purchase, and brief description of the problem. Proof of purchase will also be required.
PERFORMANCE · QUALITY · CUSTOMER SERVICE
REVISED: JULY 1, 2024
B E S T P R A C T I C E S
V E N T I N G I N S T A L L A T I O N I N S T R U C T I O N S F O R
R A N G E H O O D S A N D W O O D H O O D L I N E R S
( A L L M O D E L S )
IMPORTANT:
ADDENDUM TO INSTALLATION INSTRUCTIONS
Problems caused by the improper installations are not covered by the manufacturer's warranty.
IMPORTANT:
Undersized and improperly installed duct pipe and/or other ventilation components will cause
excessive static pressure (air resistance), that may result in rattling, vibration and air buffeting noises,
as well as inadequate ventilation.
1. BUILDING CODES
Kitchen hood/liners should be installed by qualified technicians familiar with state and local building codes.
2. DUCT PIPE & FITTINGS (ELBOWS, TRANSITIONS, ROOF & WALL CAPS)
a. ) Use round or rectangular rigid metal duct only. Where possible, use round duct as it creates the least amount of static
pressure. IT IS RECOMMENDED THAT YOU DO NOT USE FLEX DUCT
b. ) All duct sections and fittings, should overlap and be connected with at least 3 – 4 equally spaced screws and wrapped
tightly with 2 – 3 layers of Aluminum Foil Metal Duct Tape. This type of duct tape is more durable than traditional cloth duct
tape. DO NOT USE BUTT JOINTS.
c. ) For best air flow, elbows and pipe size transition fittings should not be directly connected to one another. Where
possible, always include at least 15 inches of straight pipe between fittings.
3. DUCT PIPE & FITTING SIZES
(See Duct Sizing Chart and Area Calculations section on page 3 for more details)
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DUCT RUNS - LENGTH
a. ) Configure the ventilation duct run to be as short and as direct to the outside as possible. Minimize the number of
elbows and transition fittings used. Complex or long runs should be reviewed by a qualified installer.
b. ) No portion of the ducting should be run so that the exhaust air flows downward. Since exhaust heat rises, forcing
the air to flow downward will cause increased static pressure. As previously mentioned, improperly installed duct pipe
will cause excessive static pressure (air resistance), that may result in rattling, vibration and air buffeting
noises, as well as inadequate ventilation.
c. ) Duct runs for 390 CFM hood/liner models should not exceed 20 linear feet with two 90-degree elbows (or four 45-
degree elbows), a damper and a roof or wall cap. Longer runs or additional elbows will result in decreased ventilation
performance. Each 90-degree elbow is the equivalent of 8 linear feet of duct pipe; each 45-degree elbow is equivalent to
4 linear feet of duct pipe.
IMPORTANT:
The required duct size is indicated by the size of the duct collar on the hood or liner.
IMPORTANT:
No portion of any length of duct pipe or fitting should be smaller than the duct collar of the hood/liner.
This is very important because any type of restriction anywhere in the ventilation system will cause
increased static pressure (air resistance), that may result in rattling, vibration and air buffeting noises,
as well as inadequate ventilation.
d. ) Duct runs for 600 – 1200 CFM hood/liner models should not exceed 35 linear feet with two 90-degree elbows and two
45-degree elbows, a damper and a roof or wall cap. Longer runs or additional elbows will result in decreased ventilation
performance. Each 90-degree elbow is the equivalent of 6 linear feet of duct pipe; each 45-degree elbow is equivalent to 3
linear feet of duct pipe.
e. ) Always run hood/liner ducts to the outdoors. DO NOT terminate a duct into an attic, basement, garage, crawl space
under a house, a chimney, other ducting or an enclosed room.
4. DAMPERS
IMPORTANT:
DO NOT USE SCREWS TO ATTACH ANY TYPE OF DAMPER AS THE SCREWS MAY BLOCK THE DAMPER
BLADES.
IMPORTANT:
DO NOT USE MORE THAN ONE DAMPER IN THE VENTILATION SYSTEM.
NOTE: Many styles of roof caps and wall caps have built-in dampers. See Roof Caps and Wall Caps section for more detail.
Always use carefully crafted, tightly wrapped Aluminum Foil Metal Duct Tape on all connections and physically view and
test the damper blades to make certain they are opening and closing correctly. Make sure that the damper blades do not
touch the duct walls and that there is no debris blocking the free movement of the damper mechanism. Common things
to look for include screws protruding into the blade’s path, overspray of paint, plaster and insulation. If using rectangular
duct, be sure that all four sides of the duct are on the outside of the damper’s duct collar or frame. On hood/liner
installations designed to recirculate the exhaust air back into the kitchen, be sure to remove the aluminum damper blade
before attaching the duct to the damper frame.
a. ) 390 CFM Models
390 CFM models have either a 3. 25” x 10” rectangular metal damper attached directly to the hood/liner or a 7" duct
collar that requires a 7" damper (sold separately).
b. ) 600 – 1200 CFM Models
600-1200 CFM models have either an 8" or 10" round duct collar that requires use of a damper with the
corresponding dimension (sold separately).
In-line Damper: In cold weather areas, installing an “in-line” damper may be the preferred type of installation. This is
because in-line dampers installed just above the perimeter of the heated space (the ceiling) will reduce the amount of
cold air traveling down the duct into the heated space and into the kitchen through the hood/liner. In-line dampers must
be installed so that the exhaust air-flow will open the butterfly blades.
Horizontal duct runs: The in-line damper must be installed so that the hinge between the two butterfly blades is
vertical—the hinge pin must point up and down. Otherwise, because of gravity, the damper’s blades will not close and
the damper will not prevent backdrafts.
Vertical duct runs: The in-line damper’s hinge will be horizontal (sideways), which is correct for vertical duct runs.
Gravity will help close the damper blades after each use.
Upward slanted duct runs: The in-line damper’s hinge must point to the top and bottom sides of the duct. In his
position, gravity will help close the damper blades after each use. Otherwise, because of gravity, the damper’s blades will
not close and the damper will not prevent backdrafts.
Damper in Roof Cap or Wall Cap: In ventilation systems utilizing a roof cap or wall cap with a built-in damper, do not
install an additional in-line damper. Two dampers are unnecessary and will cause increased static pressure (air
resistance), that may result in rattling, vibration and air buffeting noises, as well as inadequate ventilation.
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The roof cap or wall cap is the termination point of the venting system that allows the exhaust air to exit to the outdoors. All
sections of this fitting must have an equal or greater air path area than the hood/liner's duct collar. If any section of the roof
cap or wall cap is smaller than the hood/liner’s duct collar, the entire ventilation system will lose performance and the
restriction will cause increased static pressure.
5. ROOF CAPS & WALL CAPS
IMPORTANT:
Even though the intake side of the roof cap or wall cap may be properly sized, roof caps or wall caps
with built-in dampers must be made so that when the damper is fully open, the actual open area of the
exit point is equal to or greater than the duct collar of the hood/liner. Any undersized portion of a roof
cap or wall cap will cause excessive static pressure that may result in rattling, vibration and air buffeting
noises, as well as inadequate ventilation.
ROOF CAPS AND WALL CAPS MUST HAVE AN INTEGRAL BIRD SCREEN.
6. ATTACHING DUCT TO HOUSE FRAMEWORK
The ventilation system should be attached to the framework in such a manner that the weight of the duct and fittings is
supported with no stress on the duct joints, fittings or on the hood/liner. All ducting should be attached so as to avoid any
possible duct vibration from being transferred to the house’s framework.
7. DUCT SIZING CHART & AREA CALCULATION
DUCT COLLAR TYPES & SIZES
DUCT SIZE
(IN SQ. IN. )
DUCT TYPE REQUIRED
MINIMUM ROOFCAP OR
WALLCAP OPENING SIZE
6" DIAMETER, ROUND - 290 CFM
7" DIAMETER, ROUND - 390 CFM
8" DIAMETER, ROUND - 600 CFM
10" DIAMETER, ROUND - 1200 CFM
3.25" x 10" RECTANGULAR - 390 CFM
6" ROUND METAL DUCT
7" ROUND METAL DUCT
8" ROUND METAL DUCT
10" ROUND METAL DUCT
3. 25" x 10" RECT. METAL DUCT
28. 3"
38. 5"
50. 25"
78. 5"
32. 5"
28. 3"
38. 5"
50. 25"
78. 5"
32. 5"
ROUND DUCT
RADIUS
________
X
X
RADIUS
________
X
X
RADIUS
________
=
=
AREA (SQ. IN)
______________
The “radius” is one-half the diameter of a round duct, e. g. , ½
of a 10” round duct is 5”. 3. 1416 is “Pi”, the “constant” used
when calculating the area of a circle.
RECTANGULAR DUCT OR WALL/ROOF CAP
WIDTH
___________
X
X
DEPTH
___________
=
=
AREA (SQ. IN)
______________
ROOF CAP DRAWING: RECOMMENDED & NOT RECOMMENDED
No Mushroom Cap Style No "Goose-Neck" Style Only use a shape that looks like the
picture shown. Call TRADE-WIND®
Customer Service for any questions.
© 2 0 2 3 T R A D E - W I N D M A N U F A C T U R I N G , L L C
P R O V E R B S 2 2 : 2 9
3
AIR
VELOCITY
24.3 ft. / second
24.3 ft. / second
28.6 ft. / second
36.7 ft. / second
28.8 ft. / second
