Door Stops Work with all Kind of Single & Double Smokeproof Doors

Magnetic Door Holder for Glass doorWork with all Kind of Single & Double Smokeproof Doors> Dimensions: 118x80x55mm> Holding Force: 60kg(110Lbs)

Door Holders Work with all Kind of Single & Double Smokeproof Doors> Dimensions: 115x79x83mm> Holding Force: 120kg

Magnetic door holders are used in fire protection doors, These holders keep the doors open during dap to dap operations When smoke is detected the fire alarm transmits a signal which cuts off the power feed and the mechanism releases the door. This avoids fire and smoke expansion