These safety spring-activated door closers are constructed of diecast materials and come in a white painted finish. They are U.L. listed with a 1/2 hour fire rating, and can be used to close doors weighing up to 150 lbs. These closers feature an adjustable closing speed and they are non-handed, allowing them to be used on both left and right-handed swinging doors. Both the closer and the plastic slide plate are surface-mounted, and are easy to install. These closers operate in a pushing-closed manner, rather than in a pulling-closed method, and they do not have a hold open feature. Distance of travel: The closer arm of this safety spring closer has the ability to swing a full 180 degrees, but once it is mounted in place, the door’s distance of swing will be reduced to the point of where it makes contact with the bullet-shaped housing of the closer. For a rust and weather resistant closure, consider model numbers KC50HD (white) and KC57US (brown) which are suitable for outdoor/exterior use, designed for use with lightweight gates and screen doors. All fasteners and installation instructions are included with this item. Other colors/finishes include: black, brown, chrome plated and satin chrome plated. Be sure to view the manufacturer’s How-To Installation Video also linked to this page, in the upper left hand corner. Application of white lithium grease to internal compressing springs may be desired, but you should avoid using lubricants like WD-40 which breaks down lubricating grease.