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CertainTeed Vinyl Siding Installation Guide
52
Measure the bottom of the opening and add 7" (3-1/2" extra
for each side) if the side lineals are also 3-1/2". Add 10" total
if using 5" lineals.
Trim 3/4" tabs from the lineal as shown.
Snap the lineal in place and secure by nailing (or stapling) it
through center of the nail slots.
window
frame
3-1/2"
3/4"
3/4"
view of
notching
from back
side (same on
both ends)
finished
assembly
with side
lineal