The 4040XP is LCN's most durable and flexible heavy duty surface mounted closer, designed for institutional and other demanding high traffic applications. The 4040XP sets the standard for reliability, longevity and value with a robust design and extraordinary performance testing. LCN goes beyond ANSI and BHMA industry standards with abuse-cycle and temperature testing to mimic what door closers encounter in high-abuse environments. The patented Green Dial on the 4040XP makes spring adjustments fast, easy and foolproof. The all-weather fluid reduces maintenance and ensures consistent performance through every season. Features a cast iron body, full complement bearing, 1-1/2" diameter piston, double heat treated pinion journal. Peel-n-stick template with 2-1/4" x 5" mounting hold pattern. 4040XP cylinders are adjustable from size 1 through size 6 and is shipped set to size 3. Closing power of 4040XP Series closers may be adjusted 50 percent.