National Mfg N225-920 Square Corner Door Hinge 3.5in Ss

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N225-920 is a 3.5-inch stainless steel square corner door hinge built for full mortise installation. It is designed for industrial, commercial, and residential door applications where corrosion resistance is critical. The heavy-gauge stainless steel construction provides maximum protection against rust and corrosion, making it especially well suited for marine environments and other outdoor exposures. The hinge features a non-rising pin and a removable pin design that simplifies installation. A NIB on the bottom of the hinge delivers a clean, finished appearance. Licensed trades and facilities maintenance professionals install this type of hardware on doors requiring long-term durability in harsh conditions.

This hinge is engineered for use on industrial, commercial, and residential doors. It performs particularly well in marine environments and outdoor applications where standard steel hardware would corrode prematurely. The full mortise design requires a routed recess in both the door and the frame for a flush, professional fit. Each pack contains one hinge, and the package quantity is 3 packs per unit of measure. The removable pin allows for straightforward door hanging and removal without specialized tools.

Key Features

• 3.5-inch square corner profile for full mortise installation
• Stainless steel construction for maximum corrosion resistance in marine and outdoor environments
• Non-rising pin design maintains consistent hinge operation over time
• Removable pin for easier door installation and removal
• Heavy-gauge material provides added structural strength
• NIB on bottom of hinge for a clean, finished appearance

Compatibility

Designed as an OEM-style replacement and new-installation hinge for industrial, commercial, and residential doors requiring full mortise stainless steel hardware, particularly in marine and outdoor environments.

Installation Notes

Installation is typically performed by a carpenter, facilities technician, or door hardware professional. Power down any electric door hardware and ensure the door is properly supported before removing existing hinges. Full mortise installation requires a precisely routed mortise pocket in both the door edge and the frame jamb to achieve a flush fit. Follow applicable building codes for door hardware specifications in commercial and industrial settings.