Deltana S45BBU1B Square Hinge Heavy Duty Ball Bearing

Product Description

The DELTANA S45BBU1B is a 4.5 inch by 4.5 inch square architectural door hinge built for heavy-duty applications. It features a ball-bearing construction that reduces friction and wear under frequent or high-cycle use. The paint black finish provides a uniform matte appearance suited for doors in both residential and light commercial settings. This hinge is sold as a pair and is typically installed by carpenters, millwork contractors, or door hardware specialists handling finish hardware on interior or exterior door assemblies.

This hinge is designed for use on full-size interior and exterior doors where a heavy-duty, square-corner profile is specified. The 4.5 inch leaf size makes it appropriate for solid-core and heavy wood doors that require a larger bearing surface for proper weight distribution. The ball bearing design supports smooth, consistent door operation in high-use environments such as commercial entryways, multifamily residential units, and institutional facilities. It ships as a pair, making it ready for standard single-door installation without additional hardware sourcing.

Key Features

• 4.5 inch by 4.5 inch square hinge leaf for full coverage on heavy doors
• Ball bearing pivot for reduced friction and extended cycle life
• Heavy-duty construction rated for solid-core and high-traffic door applications
• Paint black finish suitable for interior and exterior architectural hardware coordination
• Sold as a pair to cover standard single-door hinge replacement or new installation

Compatibility

Designed as an OEM-style architectural replacement hinge for standard full-mortise door applications requiring a 4.5 inch square heavy-duty ball bearing hinge.

Installation Notes

Installation is performed by a finish carpenter or licensed door hardware contractor using standard mortise chisels, a drill, and manufacturer-supplied or matching screws. Power to any electric door hardware or access control components must be disconnected before service. Hinge mortise depth and leaf alignment should be verified before fastening to avoid binding or misalignment. Follow applicable building code requirements for door hardware in egress and fire-rated assemblies.