Oxford Blue EZ Block 4” 5” Vinyl Mounting Surface Siding 6-3/4×6-3/4 EZBLK040 14
EZBLK040 #14. The 1-piece design can be used after siding installation to mount all types of accessories. Compatible with Double 4” or Double 5” siding profile. For Double 4” or 5” Siding. Siding Accessories.