McKinney T4A3386 Heavy Weight Ball Bearing Hinge
4 1/2" x 4 1/2" Five Knuckle, Full Mortise, Brass with steel pin (.180 Gauge).
Finish Available: Satin Chrome, Stainless Steel
Recommended for use on high frequency and/or heavy wood or metal doors in schools, hospitals or other public buildings where heavy traffic is experienced. Heavy weight hinges should be used on all extra heavy doors or those exposed to high frequency use.