Hinge BB1129 4 1/2 NRP USP Half Mortise 

Hinge BB1129 4 1/2 NRP USP Half Mortise

• Half Mortise, 5-Knuckle, Ball Bearing, Standard Weight Hinge
• For use on medium weight hollow metal doors with channel iron frames requiring medium frequency service
• Two ball bearings
• Non-rising removable pin with button tip and plug.
• Beveled surface leaf
• Reversible
• Steel with Steel Pin
• Finish: USP - Prime Coat Paint