National Marker N830203 Square Door Hinge 3.5 in Oil Rubbed Bronze

Product Description

The NATIONAL MARKER N830203 is a square corner residential door hinge finished in oil rubbed bronze, designed for interior door installations. The hinge measures 3.5 inches and features a removable pin for straightforward removal and reinstallation without fully disassembling the door. Constructed from steel, it provides reliable load-bearing performance on standard interior passage doors. Mounting screws are included, reducing the need for additional hardware at the job site. This is a per-unit item sold individually.

This hinge is suited for interior residential door applications where a square corner profile is required. The oil rubbed bronze finish coordinates with period-style and transitional hardware sets commonly specified in residential remodel and new construction work. It is referenced as National Model SPB512 and is appropriate for standard interior door frames requiring a 3.5-inch square corner hinge.

Key Features

• Square corner profile for standard residential interior door frames
• Removable pin design allows quick door removal without full disassembly
• Oil rubbed bronze finish for period-style and transitional hardware coordination
• Steel construction for durable load support on interior passage doors
• Mounting screws included

Compatibility

Referenced as National Model SPB512. Designed as an OEM-style replacement or new-installation hinge for standard square corner interior residential doors.

Installation Notes

Installation is typically performed by a carpenter or general contractor during new construction or remodel work. Before replacing an existing hinge, ensure the door is properly supported to prevent damage when the pin is removed. Use a drill or screwdriver with the appropriate bit for the included screws, and verify the mortise depth matches the hinge leaf thickness for a flush fit.