Simpson Strong-Tie Outdoor Accents post bases secure the post or column to concrete and are perfect for outdoor projects, such as pergolas, patio covers and other top-supported structures. These post bases are Zmax finished first and then black powder coated for long lasting outdoor use. The Avant collection features chamfered corners and straight edges for a very clean look when installed. This is a rough cut version of the post base which is designed for a "True 4x4" or sometimes called "old lumber" which means the post actually measures 4" x 4". The post base includes a 1" standoff from the concrete to help avoid post-end rot from moisture. These bases are installed with the Outdoor Accents structural screws, hex head washers and concrete anchors , not included.