The LCN 4040 door closer has a double lever arm, includes a parallel arm shoe, has an aluminum powder coated finish, and is for use in heavy duty applications on interior or exterior doors. The hydraulic cylinder is made of cast iron, has a forged steel piston and double heat treated steel pinion for resistance to wear, wide bearings for increased load capacity, and is certified for 10 million cycles. All-weather hydraulic fluid helps reduce the need for seasonal adjustment. The double lever arm can be installed for a regular or a top-of-jamb mount, or for a parallel arm mount with the included parallel arm shoe. The door closer is non-handed, for installation on doors with hinges on the right or left side, and includes a plastic cylinder cover. The spring force required to open the door is adjustable from sizes 1 to 6 for interior doors up to 60" wide, or exterior doors up to 48" wide, to help comply with the Americans with Disabilities Act (ADA) when properly installed. The aluminum powder coat finish helps provide resistance to corrosion. The door closer meets American National Standards Institute (ANSI)/Builders Hardware Manufacturers Association (BHMA) A156.4 grade 1 standards for commercial buildings. It is also Underwriters Laboratories (UL) listed for a 3-hour fire rating, and complies with the UL 10C positive pressure fire test.SpecificationsWhat's in the Box?