Legge Regular Door Track Closer LCN4031T Door Closer is a mechanical device that closes a door in a controlled manner, preventing it from slamming. Door Closer Function - A hydraulic device that is used to automatically close a door after it has been opened. Door closers are commonly used as a fire prevention measure, typically installed on fire doors, as well as helping to prevent draughts. Features: Universal, fully reversible, non-handed door closer Closer cylinder constructed of high strength cast iron for increased durability Tested to 1,500,000 cycles Fully adjustable 1-3 strength Independent adjustment valves for backcheck, closing and latching speeds All adjustment valves are concealed behind the cover to prevent tampering Closers installed according to LCN installation instructions require minimal periodic maintenance or adjustments Specifications: Applications Regular (pull side) Top jamb (push side) Parallel arm (push side) Power: EN1-3 Adjustment controls: Closing speed Latching speed Backcheck Body Material: Cast Iron Finish: Aluminium SRI: For installations where a higher level of protection against weather conditions, or the effects of a potentially corrosive atmosphere is required, LCN offers a special rust inhibiting (SRI) process. Ferrous metal components receive an SRI pretreatment and a standard powder coat finish of your choice, or a custom powder coat finish for a nominal additional cost. Closers treated with the SRI process exceed the 100 hour protection level available with standard LCN pow