The Sentronic SEM7800 Series are heavy duty, electrically controlled door holding magnets. Magnets are fail safe and hold until the current is interrupted. A manual door closer is used to control and close the doors. A choice of floor, recessed wall or surface wall mounted magnets are available.
SEM7820 689 LCN Electromagnetic Door Holders
Magnetic Door Holder, Floor Mount, Low Profile Armature, 12V 24V 120V Tri Voltage, Aluminum Painted Finish
$724.36