E-Z Block Surface Mounting Block features a convenient one-piece design that can be installed after siding to securely mount a variety of accessories. It is compatible with Double 4" or Double 5" siding profiles, making it versatile for many siding applications. Crafted from durable vinyl with ultraviolet-stabilized color, this mounting block resists the effects of sun exposure and weather, ensuring long-lasting performance. The block has a rich textured appearance that blends seamlessly with siding. Its surface dimensions measure 6-3/4" by 6-3/4" with a projection of 3/4", and it includes both round and rectangular knockouts to accommodate different accessory sizes. Backed by a limited lifetime warranty, the E-Z Block Surface Mounting Block reliability and ease of use for siding projects. Model Number: EZBLK040