N350-884 3.5 in Oil Rubbed Bronze Spring Adjustable Door Hinge 2-pack

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N350-884 is a 3.5-inch spring-loaded, self-closing door hinge finished in oil rubbed bronze. Manufactured from cold rolled steel, this hinge is designed for residential and light commercial door installations where controlled, automatic closing is required. Both the closing speed and spring tension are independently adjustable, allowing installers to dial in the right closing force for the door weight and application. The hinge features 5/8-inch radius round corners and fits standard hinge cutouts without modification. It carries UL approval for use on fire-rated doors.

This hinge is suited for interior and exterior door installations in residential and light commercial settings where a self-closing mechanism is required by building code or fire safety regulations. Common applications include fire-rated corridor doors, utility room doors, and any passage door requiring automatic closure. Each package contains 2 hinges. The oil rubbed bronze finish coordinates with matching hardware in period-style and transitional design environments. Because the hinge fits standard cutouts, it serves as a drop-in replacement in most existing door frames without additional mortising.

Key Features

• Adjustable closing speed allows tuning to door weight and swing resistance
• Adjustable spring tension for consistent self-closing performance over time
• Cold rolled steel construction for durability in high-cycle door applications
• UL approved for installation on fire-rated doors
• Fits standard hinge cutouts — no additional mortising required
• 5/8-inch radius round corners for clean fit in standard door prep
• Oil rubbed bronze finish for corrosion resistance and period-appropriate aesthetics

Compatibility

Designed as an OEM-style replacement or new-installation spring hinge for standard residential and light commercial doors with 3.5-inch hinge cutouts, including fire-rated door assemblies where a UL-listed self-closing hinge is required.

Installation Notes

Installation is typically performed by a finish carpenter, general contractor, or qualified door hardware installer. Disengage the spring tension pin before mounting to avoid injury during screw fastening. Use a proper hinge mortise chisel or router template to confirm the cutout depth matches the hinge leaf thickness before setting screws. Verify fire door assembly requirements with the authority having jurisdiction, as self-closing hardware on rated assemblies must remain functional and unobstructed per applicable fire code.

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.