Adjustability allows the installer to mount the hook over remnants of the old roof. Batten bridge has a 9mm x 40mm slot and is 63.5mm wide. 10mm x 38mm rail slot accepts 5/16" or 3/8" bolts. Use our 1/4" or 5/16" Solar Screws in the 9mm slots.
Now Miami-Dade Approved, with 5/16"x3" screws - NOA No: 25-0102.04