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petsafe.com 7
Fit Core Covers
4A.
Measure the thickest part (T) of your cut-out. Note this
measurement.
4B.
Depending on the thickness of your door, you may not need the
tunnel support and plastic core covers or the plastic core covers
may need to be trimmed for your installation. Use the “Plastic
Core Covers Cutting Guide” (Chart 1) to determine this. If you
are using the plastic core covers and tunnel support, go to Step
4C. If you are NOT using the plastic core covers and tunnel
support, go to Fit Check under Step 5.
4C.
Insert the long plastic core cover into channel of “U”-shaped
section of tunnel support. Insert the short plastic core cover
into channel of straight section of tunnel support.
4D.
Turn over assembled tunnel and insert plastic core covers
of assembled tunnel between frame posts and lip on ap
opening of exterior frame (frame without the ap). Tunnel
support should be facing up.
Optional:
Use duct tape in the corners of core covers to help
secure in place and to improve weather resistance.
Step 4
4A
4B
Plastic Core Covers Cutting Guide
Cut-Out
Thickness (T)
Plastic Core Cover
Cutting Instructions
3
⁄16˝ - ½˝
(5 mm -13 mm)
DO NOT use plastic core covers and
tunnel support. Go to Step 5.
½˝ - 1 ¾˝
(13 mm - 44 mm)
If cut-out thickness (T) does not line
up with a groove on the plastic core
cover, then cut to next groove that
is smaller than the cut-out thickness
(T). (See illustration 4B) Use tunnel
support. Cut and go to Step 4C.
1 ¾˝ - 2˝
(44 mm - 51 mm)
No cutting of plastic core covers is
needed. Use tunnel support. Go to
Step 4C.
Chart 1
4C
4D
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