Blind Shelf Supports pair

A pair of these blind shelf supports will invisibly hold a 1 or thicker shelf. Each mounting plate is anchored to the wall studs with two flathead screws and the projecting 5 -long hex posts slip into 7/16 holes drilled in the back side of the shelf. Even if the holes end up slightly undersized the corners of the hex post will cut their way in. The design ensures that the alloy steel coupling screws remain tensioned between the posts and inserts in the plates yielding a respectable capacity of 100 lbs. for a 4 deep shelf and up to 50 lbs. at 8 deep.By adding additional supports on shelves long enough to span more than two studs each extra support adds 50 lbs. more capacity at 4 deep and 25 lbs. more at 8 deep. The simple instructions included make installation a snap. Sold in pairs. Mounting screws are not included.