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UL Certificate Heavy Duty Aluminum Alloy En 1634 Door Closer. UL & EN 1634 Certified: Complies with EN1154, UL, and fire-rated EN1634 standards for safety. 5-Year Warranty: Comprehensive 5-year guarantee covering mechanical defects. High Durability: Tested over 500,000 cycles without damage or failure. Customizable Colors: Silver standard with other colors available upon request. Heavy Duty Capacity: Supports doors up to 1100mm width and 105kg weight. Premium Components: Uses Germany Fuchs hydraulic oil and Japan seal rings. CNC Precision: Produced by America HAAS CNC machines for perfect accuracy.