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Door Closer Product Specifications: Shell Material: Aluminum alloy; Other Parts: Alloy steel; Hand: Left and Right Weight: Approximately 2.6 lbs (1.2 kg); Service Life: 30,000 times; Automatic closing gate angle: 70 - 180 degrees; Compatible with aluminum doors; Door weight: Less than 176.4 lbs (80 kg); Installation Method: Standard, parallel, door top with 3 lbs (7 kg) Included: Valve body, screws, hex screws, Japanese installation instructions.