... flexible operation of Mechanical parts at different temperatures.3. High quality coating for the body,stainless steel cover.5. Double action ... JBM-320Max Door Size1400X2200 mm Max Door Weight150kgMax Opening Angle116°Plate finishing 300#, 320#, 350#, 430#, 460#Outer size of ... ºPacking Quantity(sets)4 Applicationall metal & steel & glass & plastice doors good quality of doors floor spring (JBM-84)