» Stainless steel cover plate. » Filled with high quality anti-icing hydraulic oil ensuring and flexible operation ofMechanical parts at different temperatures. » Door opening angle at 106° at your options. » 90° stop device or non-stop device at your option. » With single closing speed adjusting valves at 90°~0° to match different closing purposes. » General design is suitable for opening doors with left/right hand and single/doubleopening, accessories are available.