Black 2070KG Zinc Alloy Adjustable Surface Mounted Automatic Spring Door Closer A practical, durable door closer designed for reliable automatic closing of single swing doors weighing between 20 and 70 KG. The surface mounted design installs directly on the door and frame without extensive modification. Constructed from zinc alloy for long service life and consistent performance. Key benefits Reliable automatic closing: Spring mechanism returns the door to a closed position every time, reducing drafts and unintentional propping. Adjustable for fit and comfort: Spring tension and closing action are adjustable to match door weight and desired closing speed. Easy surface mount installation: Installs on most standard doors without cutting into the door leaf, simplifying retrofit and replacement jobs. Durable material and finish: Zinc alloy body resists everyday wear for steady operation over time. Wide compatibility: Sized for doors within the 20 to 70 KG range, suitable for many residential and light commercial doors. Features and attributes Function: Automatic spring door closer for controlled selfclosing. Mounting: Surface mounted on door and frame; suitable for standard single swing doors. Material: Zinc alloy body for durability and consistent performance. Capacity: Designed for doors weighing from 20 to 70 KG. Adjustment: Adjustable tension and closing action to fine tune speed and latching behavior for safe, consistent closing. Performance and usability Smooth closing across varying door weights when adjusted correctly. Minimizes slamming and ensures the door latches reliably. Compact profile preserves door aesthetics while providing robust function. Typical applications Apartment and house entrance doors where automatic closing improves security and reduces heat loss. Office interior doors and meeting rooms that require consistent, quiet closing. Small retail or service entrances and back doors that need a durable, surface mounted closer without major door modification. Installation tips Check door weight and swing direction before installation to confirm compatibility. Adjust spring tension and closing speed after mounting to achieve smooth, controlled operation. Use correct mounting screws and follow standard door closer installation practice for results. This closer provides a straightforward, adjustable solution for doors in the 20 to 70 KG range, combining zinc alloy durability with surface mounted convenience and reliable automatic spring operation.