Mudsill foundation anchors provide an alternative to anchor bolts. They easily mount on forms and make finishing easier. The unique design provides installation flexibility, eliminating problems with misplaced anchor bolts. Suitable for stem wall or slab foundations, mudsill anchors are 1-piece so there are no more nuts and washers to lose. Sill size: 2x4 or 2x6; install sides with (2) 10d x 1-1/2" and top with (4) 10d x 1-1/2" fasteners. 18-gauge galvanized ZMAX coated steel.