1) HD818.HD828.HD838.HD918.HD8300.TS80types available
2) Each type has same outer dimensions and installation requirements
3) Aluminum alloy casted body
4) Dual valve adjusting with closing speed and latching speed
5) Maximum opening angle of 180o and hold open angle of
90o(double action)
6) Equipped with different fittings, they are applicable for wooden,
metal and glass doors with or without frames