PlyGem 243806 Universal Siding Mounting Block, 7/8 in L, 6 in W, Rectangular, Square, Vinyl, Flint

Ply Gem universal siding mounting blocks are ideal for installing large items such as lighting fixtures, house numbers and mailboxes. The picture-frame design adds interest and lends a finished touch. You can choose from several sizes and styles, including square and rectangle shapes with gently rounded and scroll-cut corners.