Yescom Commercial Grade Door Closer Aluminum Alloy Door Controls for 132lbs to 176lbs Door w/Backcheck Aluminum alloy door closer, 90 Positioning, 180 not Positioning Door Controls for door weight from 132.28lbs to 176.39lbs and door width from 23.6" to 47.2" Two independent valves control sweep and latch closing speeds More durable, at least 300,000 using times Ideal for home, hotels, guesthouses or other room doors