Deltana S35BBU1B-R Square Corner Ball Bearing Hinge

Product Description

The DELTANA S35BBU1B-R is a 3.5-inch by 3.5-inch square corner ball bearing door hinge finished in paint black. It is designed for interior and exterior door applications where smooth, low-friction swing performance is required. Ball bearing construction reduces wear on the pivot point and supports consistent operation over the life of the door. The paint black finish suits installations where a clean, matte dark appearance is specified. This hinge is sold as a pair and is typically installed by carpenters, finish contractors, or door hardware specialists during new construction or replacement work.

This hinge is suited for residential and light commercial door installations where a square corner profile is specified. The 3.5-inch leaf size is a common dimension for standard interior passage doors and lighter exterior door applications. It is installed in pre-mortised door frames or cut in using a router or chiseled mortise. The paint black finish makes it a practical match for painted steel or wood doors in modern and transitional architectural settings.

Key Features

• Square corner design for standard mortise door frame installations
• Ball bearing pivot for smooth, low-friction door operation and long service life
• 3.5-inch by 3.5-inch leaf size suits standard residential passage doors
• Paint black finish provides a clean matte appearance compatible with painted door and frame systems
• Sold as a pair for complete single-door hinge replacement or new installation

Compatibility

Designed as an OEM-style replacement or new-installation hinge for standard residential and light commercial doors requiring a 3.5-inch square corner ball bearing hinge in a paint black finish.

Installation Notes

Installation is typically performed by a finish carpenter or door hardware professional. Power down any electric strike or access control hardware integrated with the door before removing existing hinges. Mortise depth and leaf seating should be verified against the door and frame thickness before fastening. Follow local building codes for door hardware requirements on fire-rated or egress door assemblies.