Suitable for Domestic Use. Available Finish: Satin Stainless Steel. 10 Year Mechanical Guarantee. Dimensions: 50mm x 25mm Plate, 145mm Depth. Available in Square or Radius Versions. Suitable for Fire Doors Rated to FD30. Supplied Complete with Fixings. DOOR CLOSER - CHAIN SPRING (CONCEALED), Weight: 2.20462262 pounds, Manufacturer: Carlisle Brass. Introducing the Carlisle Brass Chain Door Closer Spring in polished chrome, the UK's most popular low-cost solution for ensuring your fire or standard doors close securely. This discreetly concealed closer is perfect for maintaining both functionality and aesthetics in your home or business, providing peace of mind and a sleek appearance. Recommended for internal doors, this innovative product is fitted into the door edge, with the chain plate attached to the frame. The spring recoils when the door is opened, ensuring it closes automatically, which is particularly useful for fire safety and energy conservation. You can also adjust the chain tension to set the door closing rate to your preference, offering both convenience and flexibility. Certified to BS EN 1634-1:2008 standards, this door closer comes with a 10 year mechanical guarantee, ensuring long-term reliability and performance. Features & Benefits: Polished chrome finish. Fitted into door edge with chain plate on frame. Suitable for fire doors and standard doors. Adjustable chain tension for flexible door closing rate. Tested to BS EN 1634-1:2008. Comes with a 10-year mechanical guarantee. Recommended for internal doors.