Hager BB1279 4-1/2X4 26D ETW4 Mortise Hinge BB 4 Wire US26D

Hager BB1279 4-1/2X4 26D ETW4 Mortise Hinge brings exceptional performance and durability to your door hardware needs. This full mortise ball bearing hinge measures 4-1/2" by 4" and is constructed from standard weight steel, designed for use with hollow metal or wood composite doors paired with hollow metal frames. The hinge features a satin chrome finish, providing a sleek and modern aesthetic that complements various architectural styles. Engineered to meet the demands of medium-frequency service, the BB1279 offers robust functionality with its five-knuckle design and ball bearing mechanism, ensuring smooth operation and extended lifespan. Compliance with ANSI/BHMA A156.1 standards guarantees its quality, making it a reliable choice for commercial applications. Installation is straightforward, as both leaves are mortised for seamless integration into doors and frames. This hinge is also fire-rated for up to three hours, adding an extra layer of safety. Additionally, it features a non-removable pin type and comes with a limited one-year warranty, reflecting Hager's commitment to quality and customer satisfaction. Whether you're upgrading existing hardware or outfitting new constructions, the Hager BB1279 Mortise Hinge is an excellent choice for professionals and knowledgeable homeowners alike, providing both functionality and style.

MORTISE HINGE BB 4 WIRE US26D

Full Mortise Ball Bearing Hinge, Standard Weight, 4-1/2" by 4", Steel, 5 Knuckle, 4-Wires, Satin Chrome 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