The ABA is designed to attach wooden posts to existing concrete. The built-in 1 in. standoff of this adjustable post base helps to prevent rot at the end of the post. The ABA has a slotted anchor hole in the base for adjustability and attaches to the post with nails or Strong-Drive® SD Connector screws. This versatile post base makes a cost-effective option for securing a post to the foundation. Width 3-9/16 in. Length 3-3/8 in. Height 3-1/16 in.