Simpson Strong-Tie APB88R Decorative Post Base for 8x8 Rough Cut Posts - Black Powder Coat, ZMAXNotice This connector is designed for Rough Cut lumber NOT nominal lumber (most common). This will only fit a post that measures an actual 8x8". If you have a nominal post measuring 7 1 2" x 7 1 2" you will need an APB88 Ornamental Post base The Simpson Strong Tie APB Adjustable Post Base is part of the Outdoor Accents Mission Collection. This post base anchors wood posts to concrete and adds a classic, craftsman style look to your outdoor spaces.