Lcn SEM7820AL Floor Mount Hold Open Magnet Aluminum

Product Description

The LCN SEM7820AL is a low-profile, single-side floor mount hold-open magnet designed to hold fire-rated and standard corridor doors in the open position until released by an alarm or access control signal. The unit mounts flush to the floor beneath the door, minimizing trip hazards and maintaining a clean aesthetic in high-traffic corridors. At 4.9 pounds and measuring 5.5 inches by 5.5 inches by 4.9 inches, it fits in tight floor pockets without obstructing door swing. The 689 aluminum finish provides corrosion resistance suited to institutional environments. This device is specified and installed by commercial door hardware professionals and low-voltage electricians working in tandem.

This hold-open magnet is well-suited for high-traffic institutional environments including schools, hospitals, government buildings, and correctional facilities. It is typically installed in corridors where fire and smoke partition doors must remain open during normal operations but close automatically upon fire alarm activation. The low-profile floor-mount design keeps the unit out of the door path and reduces interference with foot traffic, making it a practical choice for busy public access areas where code-compliant hold-open function is required.

Key Features

• Low-profile floor-mount design minimizes trip hazard in high-traffic corridors
• Single-side configuration simplifies installation in standard partition door applications
• 689 aluminum finish offers corrosion resistance for institutional environments
• Compact footprint of 5.5 inches by 5.5 inches fits standard floor pockets
• Sold as a single unit for straightforward replacement or new-construction specification

Compatibility

Designed as an OEM-style floor mount hold-open magnet for use with compatible electromagnetic door holder systems in commercial and institutional door hardware applications.

Installation Notes

Installation should be performed by a qualified commercial door hardware technician or licensed low-voltage electrician in accordance with local building codes and NFPA 80 requirements for fire door assemblies. Disconnect all power to the electromagnetic circuit before wiring or servicing the unit. Verify floor substrate integrity and anchor the base plate securely to prevent movement under repeated door contact. Coordinate with the fire alarm system integrator to confirm proper release circuit compatibility before commissioning.