Adjustable Automatic Door Closer- Heavy-Duty Aluminum

*Type: Heavy Duty Hydraulic Automatic Door Closer Material: Aluminum Alloy (or cast iron/steel in some models) *Mounting: Surface-mounted (standard), with options for top jamb, parallel arm, or slide track installation *Door Weight Capacity: 65kg to 150kg (varies by model) *Door Width Compatibility: Up to 1500mm Closing Speed: Adjustable (typically in 2 or 3 independent valves: closing speed, latching speed, and backcheck) *Backcheck Function: Yes (prevents door from slamming open)