JB-1.2, JB-1.XL
Determine location for JB-1 on the roof surface.
USE THE LID AS A GUIDE, and place the top of the lid
0-2” from the bottom of the 2nd course of shingles and
trace the outline of the lid on the 1st course of shingles.
Within the Drill Zone, add the appropriately sized hole(s) into
the attic. Apply sealant to the underside following the sealant
guide. After fittings, connections are complete, finish by installing
the lid.
STEP 2STEP 1
STEP 3
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Quick Start Guide
0-2 INCHES
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