Our larger profile aluminum slip over base covers are designed to be used over surface mounted flange application. When a 3" diameter post needs to be installed on a hard flat surface, and can't easily be direct buried, a surface mount flange is the best solution. These larger profile base covers will completely cover the surface mount flange and add that finishing touch to your post installation. All of our post base slip-over covers are constructed from .063 aluminum and have a powder coated Black exterior finish. These bases are 11" wide at the bottom, 8" Tall and have a top side opening to accommodate a 3" dia. round post. These base covers are functional and perfect for a greenbelt location. Please note, they are not recommended for high traffic areas as they can dent if hit by grocery carts or skateboards.