McKinney MacPro MPB91 Ball Bearing Hinge | 4-1/2" x 4-1/2" US32D Stainless Steel
The McKinney MacPro MPB91 is a high-performance, contractor-grade stainless steel ball bearing hinge designed for average traffic in commercial environments. Engineered with a .134 standard weight thickness, this 5-knuckle, full mortise hinge is an essential solution for door restoration, offering superior corrosion resistance and smooth operation for both wood and metal doors.
Key Performance & Safety Features
- Heavy-Duty Ball Bearing Design: Features precision-engineered ball bearings to ensure effortless movement and long-term durability, making it a permanent solution for door edge reinforcement.
- UL Fire Rated (3-Hour): Rigorously tested and certified to meet UL standards, ensuring it can withstand fire exposure for up to three hours. It is the ideal solution for commercial door security in life-safety openings.
- Corrosion-Resistant US32D Finish: Crafted from high-grade stainless steel (Satin finish), this hinge is perfect for high-moisture or exterior environments where rust prevention is critical.
- ANSI/BHMA A156.1 Compliant: Meets industry-standard ANSI A5112 (Stainless Steel) benchmarks, ensuring the hardware adheres to rigorous professional guidelines for functionality.
Technical Details & Specifications
- Brand: McKinney (ASSA ABLOY)
- Model: MacPro MPB91
- Dimensions: 4-1/2" x 4-1/2" (Standard Weight .134 Gauge)
- Material: US32D Satin Stainless Steel
- Pin Type: Features a non-rising stainless steel pin with professional button tips to maintain architectural appeal and prevent pin migration.
- Fasteners Included: Furnished with all wood screws (1-1/4" x 12 FPHW) and all machine screws (1/2" x 12-24 FPHM) for a secure installation.
- Installation: Constructed with a template screw hole pattern for easy alignment and quick field replacement.
Why Choose the McKinney MacPro MPB91?
The McKinney MacPro MPB91 is the professional’s choice for projects that demand the longevity of stainless steel without the premium price of custom architectural hardware. Whether you are performing a solution for door surface repair or outfitting a new commercial facility, its fire-rated certification and smooth ball-bearing action provide reliable performance that stands the test of time.
| General - US Finishes | US32D - Satin Stainless Steel/ 630 |
| Brand | McKinney |
| Hinge Height | 4.5" Hi |
| Hinge Width | 4.5" Wi |
| Hinge Grade/Thickness | Standard Wt .119 to .146 |
| Hinge Type | Full Mortise |
| Hinge Options | Ball Bearing |
| Base Material | Stainless Steel |
| Hinge Corners | Square |
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