Tha floor spring is manufactured material alloy steel . Tasted in 5 lac cycle Arrangement also double speed as per requirement Right / left hand opening doors Angle up to 90 degrees moving Double regulating valve independently controls and adjusts closing and latching speed S.S. Plate process with german technology Heave duty and compact size Adjustable power = 6 body size 290x115x46 (mm), width and hight 1500x2400 . Weight of door 90 to 120 (kg.)