Satin Chrome Hinge Spring, 4-1/2 x 4-1/2 for National Hardware N236-012

Primarily designed for installation in corridors, entrances, and stairwells, this innovative solution automatically seals the door, serving as a practical alternative to traditional ceiling-mounted door closers. The patented ratchet mechanism eliminates the need for a cumbersome adjustment pin, providing hassle-free operation. Compliant with the stringent NFPA 8 standard for three-hour fire-rated doors, it necessitates a minimum of two spring hinges per door for optimal performance.

Backed by UL certification, it ensures reliable functionality for doors measuring up to 4 feet by 8 feet, with a maximum weight capacity of 180 pounds. Meeting the ANSI/BHMA standard A156.17, it achieves Grade 1, signifying the highest level of safety and security.

This product weighs in at a light 1.21 pounds, making it easy to install and maneuver. Crafted in Satin Chrome for a sleek and durable finish, it bears the esteemed brand name National Hardware, synonymous with quality and trust in the North American market. Originating from Canada, this device showcases a perfect blend of innovation and craftsmanship.

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