UL Fire Rated Heavy Duty Aluminum Hydraulic Overhead Automatic Sliding Door Closer Type Adjustable Swing Commercial Door Closer

UL Fire Rated Heavy Duty Aluminum Hydraulic Overhead Automatic Sliding Door Closer Type Adjustable Swing Commercial Door Closer. UL Fire Rated Certification: Passes 90 minutes fire resistance test and UL 10C 3-hour fire rated certification. 5 Year Mechanical Warranty: Comprehensive 5-year mechanical guarantee for all products. High Durability Performance: Passed 500,000 cycles open test as per BS EN 1154 standard. Two-Way Speed Control: Adjustable two-way speed control for precise door closing management. OEM & ODM Support: Professional OEM and ODM services available for famous brands. Wide Application Range: Suitable for wooden, metal, steel, and fire-rated doors. Robust Material Construction: Made of high-quality aluminum alloy with electrostatic paint finish. Fast Sample Availability: 3 free samples provided for evaluation within 5-7 working days.