National Mfg N351-502 Closed Bar Holder 6.4in Black Steel

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N351-502 is a closed bar holder designed to reinforce doorways against forced entry. It provides a secure mounting point for a standard 2x4 lumber brace placed against the entry side of a door. Constructed from black powder coated steel, the holder measures 6.4 inches in length and 1.5 inches in width. The closed design keeps the 2x4 firmly seated in position. This hardware is installed by contractors, carpenters, and security-focused tradespeople working on residential or light commercial door reinforcement applications.

The N351-502 is used in door reinforcement systems where a horizontal 2x4 brace is needed to resist inward forced entry. The 2x4 must be slid through the bar holders, which are mounted to the door frame or wall surface on the entry side of the door. This product ships as a package of 5 holders, allowing installers to complete a full door bracing setup. It is suited for interior door frames in residential entry points, utility rooms, and similar security-sensitive doorways.

Key Features

• Closed bar holder design keeps 2x4 brace securely seated during use
• Black powder coated steel construction for durability and corrosion resistance
• Measures 6.4 inches x 1.5 inches for compatibility with standard 2x4 lumber
• Reinforces doorways against forced entry on the entry side of the door
• Package includes 5 holders for a complete bracing installation

Compatibility

Designed for use with standard 2x4 dimensional lumber as a door reinforcement brace. The 2x4 must be slid through the bar holders for proper function. No specific door brand or model compatibility is stated by the manufacturer.

Installation Notes

Installation is typically performed by a carpenter or general contractor. Power down any electronic door hardware before beginning work in the door frame area. Mount the bar holders securely to wall framing or solid blocking on the entry side of the door, ensuring fasteners penetrate into structural members. Verify the 2x4 slides freely through all holders before finalizing the installation.