90 Degree Hold-Open Function: When the door is opened beyond 90 degrees, this door closer holds the door in the open position. No need for external force or additional door wedges to keep the door open. The door closes automatically when pulled back within 90 degrees. Application Range: This commercial door closer with hold-open function is suitable for doors weighing between 45-65kg (99lb-132lb), not intended for lightweight doors. Applicable door width: 70-110cm (700-1100mm). Maximum door opening angle: 90 degrees. The door and door frame must be on the same plane or within 5cm (1.97 inches). Do not install if the plane deviation exceeds 5cm. High-Quality Construction: Made from commercial-grade aluminum alloy, this hydraulic door closer operates smoothly and automatically closes the door from 0 to 90 degrees. Features adjustable closing speed, antioxidant, anticorrosive, rustproof, durable, abrasion-resistant, and weather-resistant performance. Designed for quiet, safe, and reliable operation. Tested for 500,000 cycles with oil leakage probability under 1/1000, ensuring long-term performance and protection for your door and lock. Silent Closing: The hydraulic mechanism ensures smooth and silent door closure, enhancing comfort and convenience. Equipped with two independent valves to control closing and latching speed, allowing customizable adjustment to suit your preferences. Wide Compatibility: Suitable for various door types, including wooden, metal, and framed glass doors. Applicable for interior and exterior residential and commercial doors, including fire-rated doors. Specifications: Color: Silver Load Capacity: 45-65kg Applicable Door Width: 700-1100mm Maximum Opening Angle: 90 degrees Package Includes: 1 x Hydraulic Door Closer