Product Overview
Cal-Royal BB31 4-1/2 x 4-1/2 Standard Weight Ball Bearing Hinges, Five Knuckle
- Recommended for medium-frequency usage
- Made with four ball bearing assemblies
- Recommended for use with a door closer
- Packed with fasteners for hollow metal and wood doors
| Brand | |
|---|---|
| Finishes | 632 Bright Brass, 633 Satin Brass, 639 Satin Bronze, 640 Oil Rubbed Bronze, 646 Satin Nickel, 651 Bright Chrome, 652 Satin Chrome, US1 (622) Flat Black |
| Hinge Type | Full Mortise |
| Size | 4.5" x 4.5" |
| Knuckles | Five |
| Bearings | Ball Bearing |
| Usage | Medium Duty |
| Gauge | 0 .134 |
| Material | 1040 steel |
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Cal-Royal BB31 4.5″ x 4.5″ Ball Bearing Hinge







