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Don-Jo BB84545 Full Mortise Ball Bearing Hinge 4-1/2" x 4-1/2" — Brass, Satin Chrome Finish
The Don-Jo BB84545 is a full mortise ball bearing hinge measuring 4-1/2" x 4-1/2", crafted from brass material and finished in Satin Chrome (626). Designed for medium weight doors with average frequency use, this commercial-grade hinge features a 5-knuckle construction with square corners and a 0.134 gauge for dependable, long-lasting performance. ANSI A2112 template compliance ensures straightforward installation on standard door preparations. A non-removable pin (NRP) option is also available — simply specify NRP as a prefix when ordering.
Key Features
- Full Mortise Design: Engineered for clean, flush installation in standard mortise door and frame preparations for a professional finish.
- 4-1/2" x 4-1/2" Size: Ideal sizing for medium weight commercial doors, providing balanced support and smooth operation.
- Ball Bearing Construction: Precision ball bearings deliver smooth, quiet operation and extended service life under average frequency use conditions.
- Brass Material with Satin Chrome Finish (626): Durable brass construction with a Satin Chrome finish offers corrosion resistance and a refined aesthetic suited to commercial environments.
- 5-Knuckle Configuration: Five-knuckle design provides enhanced strength and stability for demanding commercial door applications.
- 0.134 Gauge: Standard duty gauge construction delivers reliable performance for medium weight door applications.
- ANSI A2112 Template Compliance: Meets ANSI A2112 template standards for compatibility with industry-standard door preparations and simplified installation.
- Non-Removable Pin Option: Available with a non-removable pin (NRP) for added security — specify NRP as a prefix when ordering.
- Square Corners: Classic square corner style for compatibility with standard commercial door and frame preparations.
Certifications & Compliance
- ANSI A2112 Template Compliant
- Commercial Grade Application
Technical Specifications
- Subcategory: Hinges
- Product Group: Door Hinges and Pivots
- Product Subgroup: Full Mortise Hinges
- Product Type: Full Mortise Hinges
- Commercial/Residential: Commercial
- Corner Style: Square corners
- Duty Level: Standard Duty
- Knuckles: 5
- Product Size: 4.5" x 4.5"
- Product Category: Door Hinges and Pivots
- Department: Door Hardware
Typical Applications
- Commercial Office Buildings
- Educational Facilities
- Healthcare Institutions
- Retail Establishments
- Industrial and Warehouse Facilities
- Multi-Tenant Residential Properties
- Government and Municipal Buildings
Why Don-Jo BB84545?
Don-Jo full mortise ball bearing hinges are built to commercial standards, combining brass construction with precision ball bearing technology for smooth, reliable door operation. The BB84545 meets ANSI A2112 template requirements and is available with a non-removable pin option, making it a versatile and security-conscious choice for professional door hardware installations where consistent performance is essential.
Manufacturer Resources
Product Specs
- Subcategory:
- Hinges
- Product Group:
- Door Hinges and Pivots
- Product Subgroup:
- Full Mortise Hinges
- Product Type:
- Full Mortise Hinges
- Bearing Type:
- Ball Bearing
- Commercial/Residential:
- Commercial
- Corner Style:
- Square corners
- Duty Level:
- Standard Duty
- Knuckles:
- 5
- Product Model:
- BB84545
- Product Size:
- 4.5" x 4.5"
- Product Category:
- Door Hinges and Pivots
- Product Substrate:
- Brass
- Department:
- Door Hardware