A 4-1/2" square corner full mortise hinge designed for heavier 2-1/4" thick doors — oversized entry doors, solid wood slabs, and commercial-grade applications where a standard 4" hinge isn't enough. The plain bearing design handles the extra weight cleanly, and the beveled inside leaf ensures a tight, gap-free fit against the door stop.Stainless steel pins resist rust and corrosion for long-term performance on exterior applications. Available in 15 finishes.Details Size: 4-1/2 in. Type: Full mortise, plain bearing Door thickness: 2-1/4 in. (heavy/oversized doors) Stainless steel rust-proof pins Beveled inside leaf for tight door-to-stop fit Available in 15 finish options Sold individually unless otherwise noted Note: Verify door thickness and weight before ordering. For standard 1-3/4" exterior doors, see our 4 in. hinge option.