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The TRIMCO 4048603 is a chain crash stop designed to prevent doors from swinging open beyond a controlled range of motion. It absorbs and redirects the impact force transferred through a door chain, protecting the door, frame, and adjacent wall surfaces from damage. Sized at 7.5 inches long, 3 inches wide, and 2 inches tall, this unit ships as a single piece and weighs 1.3 pounds. It is suited for commercial and institutional environments where high-traffic door use creates repeated impact loads that standard hardware cannot adequately manage.
The 4048603 is intended for use in commercial, institutional, and high-traffic residential settings where door chains are employed as a motion-limiting device. Typical installation scenarios include corridor doors, stairwell entries, and secured access points where door swing control is required. It is installed by locksmiths, door hardware specialists, or general contractors performing door hardware work.
Designed as an OEM-style replacement or new-installation crash stop for door chain hardware assemblies in commercial and high-traffic door applications.
Installation is typically performed by a licensed locksmith or qualified door hardware technician. Ensure the door and frame are stable and free of damage before mounting. Secure all fasteners fully before returning the door to service. Follow applicable building codes and hardware manufacturer guidelines for door hardware installation in your jurisdiction.
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