International Door Closers 852 - Standard (Regular) Arm Assembly - Size 2 Spring - Hydraulic Surface Mount Door Closer - Finish: (AL)Aluminum Standard (Regular) Arm - Size 2 Spring Power - UL Listed - Surface Mount Hydraulic Door Closer Door Closer Length: 8 1/16" - Mounting Holes: 7 3/8" x 3/4" - Overall Height: 4 3/4" - (AL) Aluminum Suitable for Exterior Doors up to (32" Swing Out) (28" Swing In) - Interior Doors up to 36" Two Adjustment Valves: Adjustable Closing Speed - Adjustable Latching Speed Commercial Door Closer - 5 Year Limited Factory Warranty