National Mfg N343-137 By-pass Door Kit 72 Inches

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N343-137 is a 72-inch by-passing door hardware set designed for interior sliding door applications. The kit accommodates door thicknesses from 0.75 inches to 1.375 inches and includes a steel track with a decorative finish. Doors are secured against accidental track departure, and the wheel assemblies are permanently lubricated, requiring no ongoing maintenance. This hardware set is intended for installation by carpenters, general contractors, or experienced DIYers completing interior door projects.

This kit is suited for residential or light-commercial interior by-pass door installations, such as closet openings, room dividers, and utility access panels. The 72-inch rail length makes it appropriate for standard double-door bypass configurations on wider openings. Doors can be hung or removed without detaching the hangers, simplifying future access and service. The package quantity is 3 units per order.

Key Features

• Fits door thicknesses from 0.75 inches to 1.375 inches
• Track and door geometry prevents accidental door derailment
• Permanently lubricated wheels require no maintenance
• Doors can be hung or removed without detaching hangers
• Steel track with decorative finish for finished interior appearance
• 72-inch rail length suits standard wider bypass door openings

Compatibility

Designed as an OEM-style replacement or new-installation hardware set for standard residential and light-commercial interior by-pass sliding door systems with door thicknesses between 0.75 inches and 1.375 inches.

Installation Notes

Installation is typically performed by a carpenter or skilled general tradesperson using common hand tools. Verify that the rough opening width is appropriate for the 72-inch rail before mounting. Secure the track to a structurally sound header or blocking to ensure safe door operation. Follow applicable local building codes for interior door hardware installation.