Spring Action Mechanism - Operates by direct force to enhance the natural swinging motion. Delivers consistent and reliable force with fewer moving parts, ensuring smooth and controlled operation. Polymer roller ensures quiet operation. Polymer Roller - Ensuring quiet operation by reducing friction and maintaining smooth motion. Minimizing resistance and mechanical noise, resulting in a quieter overall performance. Solid Steel Enclosed Housing - Provides excellent strength and wear resistance, ensuring a longer service life. The product is designed for long-term durability and consistent reliability, even after repeated use. Fast and Full Closure for Heavy Walk-In Doors. Ensures security and energy efficiency. Overcomes slowing action of gasket and air pressure to ensure door closing smoothly and reliably. Door Closer Marking: Kason 1095, with spring action mechanism. Be sure to check the marking before you purchasing. Product: Kason 1095 Door closer Model Number: 1095 Total Weight: 1.25 pounds