The Norton 1600 Series hydraulic door closer has a medium-size body and springs for effective door control. Rack and pinion closer has a lightweight aluminum alloy body. Features adjustments for closing, sweep and latch speed, and backcheck. Nonhanded door closer self-closes the door each time the door is opened. Standard arm type is suitable for barrier-free doors, sizes 1 to 4. For top jamb installation. This listing is for each. Technical Specification Item Door Closer Closer Series Norton 1601 Interior/Exterior Interior and Exterior Automatic/Manual Manual Hydraulic/Pneumatic Hydraulic Closer Performance Heavy Duty Closer Type Non Hold Open Hand Orientation Non-Handed Ligature Resistant No Closer Mounting Style Parallel, Regular, Top Frame Standards ANSI A156.4 Grade 2, UL and cUL Listed ADA Compliant Yes Finish Aluminum Painted Arm Type ADA, Barrier Free, Sizes 1 to 6, Standard Color Aluminum Exterior Door Width 48 in Housing Height 2-5/8 in Housing Length 9 3/4 in Housing Depth 2 7/8 in Interior Door Width 48 in Max. Door Opening 180 Degrees Projection from Wall 2 7/8 in Spring Size Adjustable 1 to 4 Fire Rating - Door Hardware 3 hr Green Certification or Other Recognition Environmental Transparency Through EPD (Environmental Product Declaration) Green Product -This item has been designated by the manufacturer as an environmentally preferable product (EPP) because this item is Environmental Transparency Through EPD (Environmental Product Declaration).