DURABLOW® CRAWL SPACE VENTILATOR MANUAL
(M1, M2)
©2018 DURABLOW ALL RIGHTS RESERVED
(Version 20181009) Page
1
READ OWNERS INSTRUCTIONS CAREFULLY BEFORE INSTALLATION.
PLEASE REMAIN THESE INSTRUCTIONS. DO NOT THROW AWAY.
DESCRIPTION
Our DURABLOW® Crawl Space Ventilator Fan Kits are designed to enhance the circulation of outdoor air
underneath homes & corridors. In order to prevent the rotting of support columns, joists, floors & beam supports,
to lower the humidity level in Crawl Spaces is very necessary & important. In addition, humidity helps in fungus
growth, and attract termite nesting & breeding here which is harmful for wooden structure buildings / houses.
All Ventilator models are equipped with a built-in thermostat which prevents the fan operation if temperature is
below 35°F (approx. 0°C). Advanced models (M1D & M2D) are equipped with a de-humidistat which activates the
ventilator fan when the relative humidity rises above the pre-set “trigger point %”.
SPECIFICATION
MODEL M1:
MODEL M2:
Air Flow : 110 CFM,
Air Flow : 220 CFM
Rating : 115 Volts ~ 50/60 Hz,
Rating : 115 Volts ~ 50/60 Hz
0.30 Amps MAX.
0.60 Amps MAX.
Thermostat :
Thermostat:
On at 50°F, Off at 35°F
On at 50°F, Off at 35°F
Size : 14 3/8” x 6 7/8” x 2”
Size : 18” x 9” x 2”
GENERAL INFORMATION
All DURABLOW® Crawl Space Ventilators are passed factory functional & HIPOT (flashing test) tested.
Fan should operate smoothly. The wiring harness / assembly should be secured. If any damages on packing box
or item, notify the freight carrier or distributor immediately to file a damage claim / proof. Please email us if you
need any assistance. Email: info@payandpack.com
HOW TO CHOOSE YOUR CRAWL SPACE VENTILATOR
Calculate the cubical space of your crawl space with the formula LENGTH x WIDTH x HEIGHT (by feet). In order
to fully ventilate the air of the crawl space in 15 minutes (best effect in practices), divide the cubical space number
by 15 to get the minimum required air-flow CFM (models with higher CFM are always recommended).
★ EXAMPLE: 25’ x 30’ x 3.5’ of the crawl space = 2,625 cuft., then, divided by 15 = 175 CFM.
So that, at least, two M1 ventilators (110 x 2 > 175), or one M2 ventilator (220 > 175) are required.
DURABLOW® CRAWL SPACE VENTILATOR MANUAL
(M1, M2)
©2018 DURABLOW ALL RIGHTS RESERVED
(Version 20181009) Page
2
INSTALLATION
The DURABLOW® Crawl Space Ventilator must be installed by a qualified technician with this
instructions / manual. Improper installation can cause a hazardous danger such as fire, electric
shock or personal injury or death.
Please contact with DURABLOW® (info@payandpack.com) if any questions in installation. Keep the power source
disconnected before & during the installation and maintenance.
TOOLS & SKILLS
a. 5/16" Nut Runner or Flat Head Screw Driver.
b. Drill with 5/16" Masonry Bit if mounting on brick or foundation block.
c. Model M1 must be hard wired. Grounding Outlet within 6 feet of Ventilator location (M2).
LOCATION - Install this Ventilator from inside of the crawl space, behind existing foundation ventilation openings.
★ 4 EVA pads are included in box to reduce vibration and noise. Apply on 4 sides of front panel before mounting.
1. Remove the existing doors / covers on ventilation openings around the perimeter of the crawl space.
2. Position the Crawl Space Ventilator over the ventilation opening.
3. (a) If installing on foundation block or brick, mark location of mounting holes in the four corners of the metal
panel plate and drill 5/16" holes with masonry drill bit. Insert wall anchors into openings and secure Crawl Space
Ventilator to the wall with four screws. (b) If installing on a wood wall, rim joist or mesh panel on crawl space
vent openings, secure your ventilator with screws, washers and nuts in the four corners of the ventilator metal
panel plate.
INSTALLING MODEL M1
INSTALLING MODEL M1D, M2 M2D
(it is model M2D shown below)
CAUTION: For general home ventilation use ONLY. Not for industrial or exhausting hazardous gases use.
WARNING: To avoid the danger of fire or electric shock, do NOT use with any solid-state speed control device.
DURABLOW® CRAWL SPACE VENTILATOR MANUAL
(M1, M2)
©2018 DURABLOW ALL RIGHTS RESERVED
(Version 20181009) Page
3
WARRANTY & CUSTOMER SERVICE
WARRANTY
“LIMITED ONE YEAR WARRANTY”
DURABLOW warrants to the original purchaser of this product that the product will be free from the defects
of faulty materials or assembling for a period of ONE year from the date of original purchase.
Remedies under this warranty are limited to replacing or refunding, at DURABLOW’s options.
If DURABLOW requires the defects which are within the above stated warranty period, they should be returned
to DURABLOW appointed address, & return shipping prepaid by customers (return shipping will be refunded).
CUSTOMER SERVICE
(a) AMAZON and EBAY customers:
For better understanding the order & buyers’ details, please send email to the original seller from the original
marketplace platform. EXAMPLE: If you buy from eBay, please send email to your seller on eBay.
(b) Aliexpress, WISH.com, Newegg, Sears...other marketplaces’ customers:
Please send email to info@payandpack.com
Please include your Buyer ID, Order ID, Product ID, Date of Purchase...etc. for faster assistance.
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