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product features:
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.



table of technical parameters:
equipment model AK-8H/AFD-8H
Applicable door weight 50KG
Standard opening force 8.9(N.m)
Installation method Hidden
Maximum opening angle 180° in one direction
product installation or operation instructions: 12