Norton Rixson 900-300 Door Holder/Release Spacer, 3" Armature Extension, Sprayed Aluminum

Optimize door-holding performance and compliance with the Norton Rixson 900-300 Door Holder/Release Spacer — a purpose-built armature extension that solves gap and alignment issues on electromagnetic door holders. This 3-inch armature extension increases the distance between the armature face and the door face, ensuring consistent hold-open operation where a standard armature position won’t engage properly. Finished in sprayed aluminum, the 900-300 resists corrosion and blends with common hardware aesthetics while keeping maintenance needs low.

Engineered to work with the Rixson 900 base unit, the 900-300 armature extension installs quickly for efficient retrofits and new builds, minimizing downtime for facilities and security teams. Its reliable aluminum construction supports integration with fire alarm and smoke detection systems, access control, and other security monitoring setups — helping you maintain life-safety performance and streamlined surveillance workflows. Ideal for commercial, healthcare, education, and institutional projects requiring dependable fire door hold-open solutions.

Specify the Norton Rixson 900-300 for applications that need a durable 3-inch spacer to improve electromagnetic door holder alignment. Contact sales or add to cart to ensure compliant, secure door control.

• Extends armature reach by 3 inches to maintain reliable hold-open performance on uneven or recessed doors
• Sprayed aluminum finish resists corrosion and reduces maintenance in high-traffic security and fire-safety environments
• Quick retrofit: designed to pair with the Rixson 900 armature base unit for fast installation and minimal downtime
• Improves integration with fire alarm, smoke detection and access control systems for coordinated monitoring and release
• Lightweight, durable aluminum construction delivers long-term reliability for commercial, healthcare, and education facilities