Alcoa Home Exteriors E-Z Block Surface Mounting Block

Ply Gem E-Z Block Surface Mounting Block - The 1-piece design can be used after siding installation to mount all types of accessories. Compatible with Double 4" or Double 5" siding profiles. Manufactured with ultraviolet-stabilized color, minimizing the effects of exposure to the elements. Rich textured appearance. Surface dimensions: 6-3/4" x 6-3/4". Projection: 3/4". Knockouts: Round 1" diameter; rectangle 2-3/8" x 3-3/4". Limited lifetime warranty. - Surface Dimensions: 6-3/4" x 6-3/4", Color: White, Material: Vinyl, Flange Dimensions: N/A, Projection: 3/4", Round Knockout: 1" Dia, Rectangular Knockout: 2-3/8" x 3-3/4", J-Channel Inside Dimensions: N/A, Pkg Qty: 1