Hager Hinge BB1279412L1 Full Mortise Ball Bearing Hinge

Product Description

The HAGER HINGE BB1279412L1 is a full mortise, standard weight ball bearing hinge finished in flat black. Designed for commercial and residential door applications, it measures 4.5 inches x 4.5 inches and delivers smooth, consistent operation through precision ball bearings. At 1.15 pounds per unit, the hinge is built for standard weight door assemblies where a clean, low-profile mortise installation is required. The flat black finish suits modern architectural hardware programs. Installers working on interior or exterior door frames in commercial or residential construction will find this hinge suited to standard mortise prep work.

This hinge is intended for full mortise door installations where the hinge leaf is recessed flush into both the door edge and the door frame. Typical applications include commercial office, hospitality, and residential entry or interior doors requiring a standard weight ball bearing hinge. The flat black finish is appropriate for projects specifying dark or matte hardware. Sold individually, it fits into programs where hardware is specified per leaf or per pair depending on door weight and frequency of use.

Key Features

• Full mortise design for flush, recessed installation in door edge and frame
• Standard weight rating appropriate for typical interior and light commercial door assemblies
• Ball bearing construction provides smooth, low-friction operation over repeated cycles
• 4.5 inch x 4.5 inch leaf dimensions suit standard door preparations
• Flat black finish for compatibility with matte or modern architectural hardware specifications
• Sold as individual units with a case quantity of 48 for project ordering

Compatibility

Designed as an OEM-style full mortise ball bearing hinge for standard weight door assemblies requiring a 4.5 inch x 4.5 inch hinge leaf in a flat black finish.

Installation Notes

Installation is performed by a licensed carpenter, door hardware installer, or general contractor. Power down any associated electric hardware or access control before servicing the door frame. Mortise pockets in the door edge and frame must be routed to the correct depth to ensure flush seating of both hinge leaves. Follow applicable building codes and door hardware manufacturer guidelines for hinge quantity and placement based on door height, width, and weight.