Reference width of door is 800*2100mm,suitable for the door weight of 30-50kg.The adjustable section of closing speed is 180°-15°, the adjustable section of locking is 15°-0°.Two hydraulic pressure vales control two sections of door closing separately. The speed of locking has been control by the whole section of hydraulic pressure. Quality medium carbon steel gear and piston through hardening treatment flexible performance Selectable built-in stop function (90° posting)and (180°without posting)Anti-freezing hydraulic oil ensure normal operation from -40° to 45°.Optional silver gray, bronze, golden and black finishes.