Kjrstini Lee
installing a g-rib panel and havent a clue where to place the screws, valley, small 3/4 bump or on the flat part??
David Stermer
Hi and thanks for the question! Manufacturers vary in the fastener locations. Testing, approvals and evaluations may be based on a particular location. I recommend that you contact the manufacturer for their input on fastener location. Regards, David Stermer

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