Adjustability allows the installer to mount the hook over remnants of the old roof.
The batten bridge has a 9mm x 40mm slot and is 63.5mm wide. The 10mm x 38mm rail Slot accepts 5/16-inch or 3/8-inch bolts. Use the 1/4-inch or 5/16-inch Solar Screws in the 9mm slots. Works with all stone coated steel roof profiles including Decra, Boral, and Isaiah roofing.