Hager BB1279 4-1/2X4-1/2 10B ETW4 Standard Weight Hinge

Hager BB1279 4-1/2X4-1/2 10B ETW4 Hinge is a full mortise ball bearing hinge that combines durability and functionality for commercial applications. Measuring 4-1/2" by 4-1/2", this standard weight hinge is crafted from robust steel and features a 5-knuckle design with four wires, offering exceptional support for medium-frequency service on hollow metal or wood composite doors paired with hollow metal frames. The oxidized satin bronze over copper plated oil rubbed finish not only enhances the hinge's aesthetic appeal but also provides added protection against wear and tear. Manufactured according to ANSI/BHMA A156.1 standards, this hinge ensures reliable performance, making it an ideal choice for high-traffic environments. It is designed for full mortise installation, where both leaves are mortised-one in the door and the other in the frame-ensuring a seamless look and smooth operation. With a fire rating of up to 3 hours, the Hager BB1279 hinge meets stringent safety requirements, instilling confidence in its use. The removable pin allows for easy maintenance and installation, while the hinge's compatibility with a variety of door types makes it a versatile addition to any commercial project. Backed by a limited 1-year warranty, this hinge is a sound investment for your building needs.

HINGE, STANDARD WEIGHT

Full Mortise Ball Bearing Hinge, Standard Weight, 4-1/2" by 4-1/2", Steel, 5 Knuckle, 4-Wires, Oxidized Satin Bronze Over Copper Plated Oil Rubbed Finish

Ball bearing standard weight steel base hinge for use on hollow metal or wood composite doors with hollow metal frames requiring medium frequency service

There are three dimensions to know in order to determine the minimum width of the hinge: door thickness, backset, and clearance required.

Today, the Hager name is synonymous with architectural hinges. In fact, they are the industry’s premiere designer and manufacturer of architectural hinges, with a product line that offers one of the widest varieties of sizes, shapes, and finishes--all of which meet or exceed ANSI standards. 

• Hinges are manufactured in accordance with ANSI/BHMA A156.1. Self-closing hinges and pivots are in accordance with ANSI/BHMA A156.17 using three hinges per opening on a 3’0” x 7’0” x 1-3/4” (914 mm x 2134 mm x 44 mm) door. 
• Round corners are available in 1/4” (6 mm) (standard) or 5/8” (16 mm) radius.
• Full Mortise Both leaves are mortised, one leaf in the door and one leaf in the frame (wood door or hollow metal door with wood frame or hollow metal frame). Example: BB1279, 4-1/2” x 4-1/2” (114 mm x 114 mm), US26D
• Half Mortise One leaf is mortised in the door and the other is surface applied to the frame (hollow metal door with channel iron frame). Example: BB1109, 4-1/2” (114 mm), US26D
• Full Surface Both leaves are applied to the surface, one to the door and the other to the frame (metal core door or hollow metal door with channel iron frame). Example: BB2171, 5” (127 mm), USP
• Half Surface One leaf is mortised in the frame and the other is surface applied to the face of the door (wood door with wood frame or metal core door with hollow metal frame) Example: BB1163, 5” (152 mm), US26D

Resources

• Hager Commercial Hinges Cut Sheet