Hager BB1279 4-1/2X4-1/2 US26 ETW4 Standard Weight Hinge

Hager BB1279 4-1/2X4-1/2 US26 ETW4 Hinge is a full mortise ball bearing hinge designed for durability and reliable performance in medium-frequency applications. Measuring 4-1/2 inches by 4-1/2 inches, this standard weight hinge is crafted from steel and features a bright chromium plated finish that adds a polished silver aesthetic to any door. Engineered with five knuckles and four wires, the BB1279 is suitable for both hollow metal and wood composite doors, ensuring a tight fit with hollow metal frames. It meets ANSI/BHMA A156.1 standards, making it an excellent choice for commercial installations where quality and resilience are paramount. The hinge's removable pin type allows for easy maintenance and replacement, while its 3-hour fire rating enhances safety compliance in various settings. For optimal installation, consider the door thickness, backset, and required clearance to determine the hinge's minimum width. Hager's reputation as a leading manufacturer of architectural hinges guarantees that the BB1279 will meet the demands of any project with precision and reliability. Backed by a limited one-year warranty, this hinge offers peace of mind along with its exceptional functionality, making it a smart choice for professionals and knowledgeable homeowners alike.

HINGE, STANDARD WEIGHT

Full Mortise Ball Bearing Hinge, Standard Weight, 4-1/2" by 4-1/2", Steel, 5 Knuckle, 4-Wires, Bright Chromium Plated 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