Full mortise butt hinges are the most commonly used type of hinge on commercial doors. The hinge sits flush with the surface of the door and frame when installed, leaving a smooth finished appearance. Spring hinges are used for automatic closing of fire doors, when a door closer cannot be used.
- Trudoor Choice
Trudoor - SPH-US26D – 4.5″ x 4.5″ UL Listed Spring Hinge$12.00Usage: Medium Duty
Ives - 5BB1 – 5″ x 4.5″ Ball Bearing Hinge$13.00Usage: Medium Duty
McKinney - TA2714 – 4.5″ x 4.5″ NRP Ball Bearing Hinge (Non-Removable Pin) – US26D$9.00Usage: Medium Duty
Stanley - FBB179 – 4.5″ x 4.5″ Ball Bearing Hinge$8.00Usage: Medium Duty