DPTZ deck post tie products are used to attach 2x4 vertical posts to the side of stringers, rims, or other wood members. Install in pairs at a recommended minimum center to center spacing of 5". 14-gauge galvanized ZMAX coated steel. For 2x4 members. Install with (2) 3/8" through bolts into side member and 5-10d x 1-1/2" to post.