Door damper unit for interior, swinging doors Grips door at final 15 and softly, self-closes doors more gently compared to other door closers, putting less stress on the hinges Heavy Duty: Holds up to 220 lbs doors (100 kg) Invisible design minimizes visibility of the hardware Recommended Door Specifications: Thickness: minimum 40 mm~60 mm (1-9/16"~2-3/8") Width: maximum 900 mm (35-7/16") Weight: 40~100 kg (88~220 lbs) Can be adjusted for door weight after installation. Counterplate position can be easily adjusted by removing cover and turning micro-adjustment screws Can be used with HES3D-E190 and HES3D-160 Includes screws and paper template for installation.