A 4" square corner full mortise hinge built for standard 1-3/4" thick exterior doors. The plain bearing design handles the weight and daily use of a full exterior entry door, while the beveled inside leaf pulls the door tight against the stop for a clean, gap-free fit.Stainless steel pins resist rust and corrosion — important for exterior applications exposed to weather and humidity. Available in 15 finishes to coordinate with your entry hardware.Details Size: 4 in. Type: Full mortise, plain bearing Door thickness: 1-3/4 in. (standard exterior) 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 hinge size before ordering. For heavier or thicker doors, see our 4-1/2 in. hinge option.