Welcome to the product page！

Mainly used in: residential, hotel, fire hydrant and other small doors. It is applicable to fire doors, flues and escape doors. The top rotating shaft is built-in, which does not affect the beauty of the door. Stable door closing; The closing force can be adjusted freely, which can meet the requirements of any size. There is a special trapezoidal spring in it, which is durable. A very thin fixed film is attached to ensure easy installation and reduce the cost.