Hager BB1278-4.5X4.5-652 Mortise Hinge BB 4.5" x 4.5" 26D

Hager BB1278-4.5X4.5-652 Mortise Hinge offers a reliable solution for your door hardware needs, designed with functionality and durability in mind. This full mortise ball bearing hinge measures 4-1/2 inches by 4-1/2 inches and features a standard weight design, making it ideal for commercial applications. Constructed from steel and coated with a satin chromium plated finish, it not only provides a sleek appearance but also ensures long-lasting resistance to wear and tear. Designed for full mortise installation, both leaves of this hinge are mortised-one into the door and the other into the frame-making it suitable for wood or hollow metal doors. The hinge is built in accordance with ANSI/BHMA A156.1 standards, assuring you of its quality and performance. With a fire rating of up to 3 hours and a removable pin type, this hinge facilitates easy maintenance and replacement. The Hager BB1278 hinge features five knuckles for added strength and stability, ensuring smooth operation over time. Backed by a lifetime limited warranty, it's a dependable choice for building professionals and knowledgeable homeowners seeking reliable door hardware solutions. Elevate your door functionality with the Hager BB1278 Mortise Hinge.

MORTISE HINGE BB 4.5X4.5 26D

Full Mortise Ball Bearing Hinge, Standard Weight, One Leaf Tapped, 4-1/2" by 4-1/2", Steel, Satin Chromium Plated Finish

Steel Full Mortise Commercial Hinge, Standard Weight, Ball Bearing, One Leaf Tapped, 4-1/2" x 4-1/2", Satin Chromium Plated

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