Installation Guide
gable treatment
Gable Vents
For Vinyl and Aluminum Siding
Using the inward edges of the vent 
base as a guide, mark the area to be 
cut in the exterior wall surface, then 
cut the hole.
Center the base of the vent over the
opening and level the base. 
Note the word “TOP” on the base 
when positioning it.
Nail the base onto the wall surface 
through the slotted nailing flange. A 
water diverter should be installed at 
the base. (Fig.1)
Siding can now be installed around 
the vent base. Be sure to leave a 1/4˝ 
clearance between the cut siding and 
the base to allow for expansion and 
contraction. (Fig. 2)
Snap the face into the base by 
pressing firmly. 
Should it be necessary to remove the 
face, firmly pull the face from the 
base. (Fig. 3)
Gable vents can be installed without 
cutting a hole if you want it to be 
decorative only.
IMPORTANT:
Stamped "TOP REC"
or "TOP HR" Must Be
Facing Up
1/4"
Fig. 2
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