product specification: The weight of the door used to use hydraulic door springs is very important. Therefore, knowing the approximate door weight is important to find the most suitable hydraulic spring for your door. If a heavy hydraulic door spring is installed on light doors, the door will be difficult to open and difficult to close. If a light hydraulic door spring is installed on heavy doors, the door will hardly close. It is very important that the hydraulic door springs be installed according to the assembly diagram. One of the two different adjustment positions on the hydraulic door spring adjusts the closing speed of the door, while the other adjusts the final closing speed of the door. Color: silver Closing force: 2 Door type: wood, metal, iron door etc. Door weight: 20-45 kg
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