Product Overview
Design Hardware BB5-HW Series 4-1/2 x 4-1/2 Full Mortise Five Knuckle Commercial Hinges, Heavyweight, Non-Removable Pin
The embodiment of small but mighty
- Ball bearing reduces friction to extend lifetime of hinge
- For use on heavy weight doors or doors with high frequency use
- More durable than standard hinges
- Swaging: 1/16” Swage standard which provides 1/16” of clearance between leaves
- Security NRP: NRP – Non removable pin standard on all BB5-HW hinges
- Fire Door Use: Approved for most types of fire doors up to 4’ x 10’, 8’ x 10’ pairs – Refer to NFPA80
| Brand | |
|---|---|
| Finishes | 630 Satin Stainless Steel, 652 Satin Chrome |
| Size | 4.5" x 4.5" |
| Material | Steel (ANSI A8112) or grade 304 stainless steel (ANSI A5112) |
| Gauge | 0 .180 |
| ANSI/BHMA Standard | Meets ANSI/BHMA A156 .1 |
| Fire Rating | Approved for most types of fire doors up to 4’ x 10’ – refer to NFPA80 |
| Usage | Heavy Duty |
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Design Hardware BB5-HW NRP – 4.5″ x 4.5″ Heavy Weight NRP Ball Bearing Hinge (Non-Removable Pin)