New old stock Greenheck magnetic damper latch kit, Part Number 850844, designed for 42–48 inch steel dampers.
Includes:
Used with compatible Greenheck commercial HVAC ventilation dampers. The magnetic brackets help hold the damper blade in position. Common applications include exhaust, supply-air, and industrial ventilation systems.
Greenheck currently identifies Part No. 850844 as a steel damper magnet latch for 42–48-inch dampers Greenheck product page