Description Single Spring Stainless Steel Automatic Door Closer. Features: HIGH QUALITY The Light Door Closer is Made of Commercial-grade Aluminum Alloy, Spring Operation, Totally Automatic Closing, Gives You an Easy and Safe Life, Protects Your Door and Lock. ALL PURPOSE Fire Doors Adjustable Works with All Types of Medium Doors -- Right and Left Opened Doors, Wood and Metal Doors, Residential and Commercial Doors, Exterior/interior Door Closer, Fire Doors. Door and Door Frame Should Be on the Same Plane and Within 5 Cm/1.97. APPLICATION SCOPE Door Closer Commercial Applies to Door Weight Between 45-60kg(99lb-132lb) Not for Light Door, Door Width 80-130cm(31.4-51.1), Door Open Range 180 Maximum. QUALITY ALUMINIUM CONSTRUCTION We Use Only the Finest Aluminum, Zinc Coated for Anti-rust Protection. High-quality Steel-encased Hydraulics Tested to Endure over 500,000 Open/close Cycles, for the Best in Performance. Salt Spray Tested for 96 Hours with Perfect Results. Specification: Materials : Aluminum Alloy Fitting Door Width