Gaines Standard Post-Black The Standard post is constructed of durable extruded aluminum and painted with a highly protective, state-of-the-art, five step powder coated paint process Gaines powder coat contains ultraviolet (UV) ray inhibitors to protect the surface making it resistant to chipping, scratching, and fading. Dimensions: 54"H x 4"W x 4"D. Direct Burial installation recommended in concrete