National Mfg N343-129 By-pass Door Kit 60 Inches

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N343-129 is a 60-inch by-passing door hardware set designed for interior sliding door applications. It accommodates doors ranging from 3/4 inch to 1-3/8 inches in thickness, making it compatible with a wide range of standard interior door slabs. The hardware includes a steel track with a decorative finish and wheels that require no lubrication, reducing long-term maintenance demands. This kit is suited for installation by carpenters, general contractors, and experienced DIYers working on closet or room divider bypass door configurations.

This by-pass door kit is intended for residential interior applications where two sliding doors operate on parallel tracks, allowing one panel to slide in front of the other. The 60-inch rail length accommodates standard double-door openings. The design prevents doors from accidentally jumping the track during normal operation, and doors can be hung or removed without detaching the hangers, simplifying future adjustments or door swaps. Package quantity is 3 units per set.

Key Features

• Accommodates door thickness from 3/4 inch to 1-3/8 inches
• 60-inch steel track with decorative finish
• Wheels require no lubrication for reduced maintenance
• Track design prevents doors from accidentally jumping off the rail
• Doors can be hung or removed without detaching hangers
• Comes as a 3-unit package set

Compatibility

Designed as an OEM-style replacement or new-installation hardware set for standard residential interior by-passing sliding door systems requiring a 60-inch track rail.

Installation Notes

Installation is typically performed by a carpenter or general contractor following standard interior door hardware procedures. Ensure the header framing above the opening is structurally sound and level before mounting the track. Verify door slab thickness falls within the 3/4-inch to 1-3/8-inch supported range before hanging panels. Follow all applicable local building codes for interior door installations.