FEATURES

?USAGE? Perfect for medium and high traffic entrances such as aluminum storefronts, restaurants, and other public places. Use on doors weighing up to 330 lbs, Manufactured from Cast Aluminum, Wrought Steel arm, Heat Treated Piston, Powder Coated Finished Body to enhance corrosion resistance, Tri-Pack (Regular, Top Jamb, and Parallel Arm Mounts) standard, Adjustable Back Check Valve.

?MATERIAL? Grade 1 Medium/Heavy Duty Cast Aluminum. Wrought Steel arm. Powder Coated Finished Body to enhance corrosion resistance. Heat Treated Piston.

?CERTIFICATIONS? BHMA/ANSI 156.4 Grade 1 to 2,000,000+ cycles, UL Fire Rated Listed - 3 hrs.

?EASY TO INSTALL? This door closer are equipped with installation guide with detailed steps, you can easily install them according to the installation guide. Use on doors weighing between 44 and 330 pounds.
link:https://www.heinda-cn.com/door-closer/ul-listed-door-closer/overhead-ul-listed-door-closer.html