National Marker N830433 Bi-fold Door Hinge

Product Description

The NATIONAL MARKER N830433 is a surface-mount, non-mortise bi-fold door hinge finished in satin nickel. It features a non-removable, tight, non-rising pin that stays secure once installed, preventing accidental disassembly and improving door security. The hinge is designed for bi-fold doors at least 1 inch thick and requires no mortising, making installation straightforward on finished door and frame surfaces. Carpenters, finish installers, and general contractors install this hinge on residential and light commercial bi-fold door applications where a clean, low-profile mount is needed.

This hinge suits standard bi-fold door installations in closets, laundry rooms, pantries, and similar interior spaces. Because mortising is not required, it can be applied directly to the door and frame face without cutting recesses, reducing installation time on new construction and remodel projects alike. The satin nickel finish coordinates with common interior hardware finishes. It is sold as a single unit and is appropriate for doors meeting the minimum 1-inch thickness requirement.

Key Features

• Non-removable, tight, non-rising pin for secure, permanent installation
• Surface-mount design — no mortising required
• Suitable for bi-fold doors at least 1 inch thick
• Satin nickel finish for compatibility with standard interior hardware
• Lightweight construction at 0.225 pounds per unit

Compatibility

Designed as a surface-mount replacement or new-installation hinge for bi-fold doors at least 1 inch thick. Catalog reference: National V530 3 In. non-mortise hinge.

Installation Notes

Installation is typically performed by carpenters or finish trades using standard hand tools. Power down any associated hardware or locking systems before servicing door components. Mount the hinge flush to the door and frame surface per the door manufacturer's specifications, ensuring the door panel is properly aligned before fastening. Do not install on doors thinner than 1 inch, as the hinge is not rated for undersized panels.