Bommer BB5004-450 4.5" x 4.5" Steel Ball Bearing Hinge
The Bommer BB5004-450 Heavy Weight Full Mortise Ball Bearing hinge has a 5 Knuckle construction. Bommer BB5004-450 Ball Bearings are hardened steel raceways and balls with steel pin. The BB5004-450 are recommended for heavy weight door with high frequency of use.
Bommer BB5004-450 Certifications
|UL:||BHMA Certified Grade 1|