The 4040XPT is LCN's most durable and flexible heavy duty surface mounted track closer, designed for institutional and other demanding high traffic applications. The 4040XPT 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. Features a cast iron body, full complement bearing, 1-1/2" diameter piston, double heat treated pinion journal. 4040XPT cylinders are adjustable from size 1 through size 4 and is shipped set to size 3. See catalog for arm detail specifics.