Hager BB1279 4-1/2X4-1/2 US4 ETW4 Electric Hinge

Hager BB1279 4-1/2X4-1/2 US4 ETW4 Electric Hinge is engineered for durability and performance, making it an ideal choice for commercial applications. This full mortise ball bearing hinge features a standard weight design and measures 4-1/2" by 4-1/2", constructed from robust steel with a sleek satin brass plated clear coated finish. The hinge incorporates five knuckles and four wires, ensuring smooth operation and reliable power transfer. Designed for use on hollow metal or wood composite doors with hollow metal frames, the BB1279 is suitable for medium frequency service, providing exceptional strength and stability. Meeting ANSI/BHMA A156.1 standards, this hinge is built to last and is rated for up to three hours of fire protection, enhancing safety in commercial settings. With its non-removable pin type, the Hager BB1279 ensures security while offering a clean, professional appearance. Installation is straightforward, and the hinge is compatible with both mortised and surface-mounted applications. This hinge not only meets the demands of everyday use but also complements a variety of architectural styles, making it a versatile addition to any building project. Trust in Hager's legacy of quality and performance with the BB1279 Electric Hinge.

ELECTRIC HINGE

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