DOOR CLOSERS COMMERCIAL USAGE: The DC9016 Automatic Door Closer from LYNN HARDWARE suits high-traffic entrances, such as aluminum storefronts, factories, schools, restaurants, and other public places. This is a door automatic closer for doors that weigh up to 150kg (330lbs max) and are (800-1500mm, 31-60 inch) wide. Also, it is a non-handed closer that will work on left- or right-handed doors exposed to extreme temperatures. MATERIAL: This door hydraulic closer is manufactured from US26D satin chrome-plated cast aluminum, wrought steel arm. It features a heat-treated piston and a powder-coated body to enhance corrosion resistance. The heavy-duty door closer features three valves for adjustable closing speed, latching speed, and backcheck. This automatic door closer latches while maintaining quiet operation. CERTIFICATIONS: These auto close door hinges have a UL-certified three-hour fire rating. LYNN HARDWARE closers also carry the ANSI / BHMA A156.4 certification. As ANSI Grade 1 commercial door hardware with 2 million cycles required, DC9016 suits medium- to high-traffic applications, like in department stores, schools, and offices. This model also complies with accessible design standards. INSTALLATION: Every pack of commercial door closer we provide contains all the necessary hardware, such as brackets and soffit plate, for installation using any of the three mounting types. The mounting options for our surface-mounted door closer are regular arm mounting (most power-efficient), top jamb mounting (fairly power-efficient), and parallel arm mounting (with 25% less power efficiency than the other two options). SPECIFICATIONS: This door closer weighs 12.6 pounds. Its screw/bolt pattern is 5" c-c wide and 2-1/4" c-c high. It has a footprint height of 3-1/2" (89 mm) and a weight of 12-1/4" (311 mm). This automatic door closer's projection is 2-1/4" (57 mm). It can deliver a fixed spring force #1-6 of 2-14 pounds or more of closing force., Weight: 10.0 Pounds, Manufacturer: LYNN HARDWARE