Prime-Line KC60HD Safety Spring Door Closer &ndash; Easy to Install to Convert Hinged Doors to Self-Closing &ndash; Diecast Construction (4-1/4&rdquo; Satin Chrome, Non-Handed) INCLUDES  (1) Surface mounted spring-loaded door closer; works on doors up to 150 lbs; non-handed; adjustable tension; U.L. listed; 1/2 hour fire rated. EASY DIY PROJECT  Thanks to these KC60HD safety spring door closers, your next to-do is quick and easy. Use these door closers to convert hinged doors to self-closing ones. EASY INSTALLATION  With a closer and plastic slide plate being surface mounted, installation is a breeze. This spring door closer can be used on doors up to 150 lbs and can be used on both left and right-handed doors. Easily adjust the tension on this safety spring door closer. INSTALLATION NOTES - To prevent over-tensioning, adjust closer one quarter turn at a time and test door after each adjustment. Over-tensioning can cause spring to buckle. If you wish to add additional lubricant to unit, carefully disassemble unit after relieving tension and apply white lithium grease directly to the springs. PRODUCT INFO - This safety spring door closer features a non-handed design and Satin Chrome painted finish to complement any style door. 1 wide base, 4-1/4 hole center spacing and 4-3/4 arm. These door closers are only designed to be use on interior doors less than 150 pounds.