3-1/2" Stainless Door Hinge. Made of stainless steel material, 300 series for maximum corrosion resistance & heavy-gauge material for added strength. Nob on hinge for finished appearance with square corners. Non-rising pin. 5 knuckle, full mortise design. Screw holes are countersunk. Removable pin for easier installation. Sold as single hinge in pack.  National Hardware Model No. N225-920.