The LCN® 4040XP is our 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. We built the 4040XP from the inside out, combining tougher, bolder construction with proven LCN technology. The result is a closer that's stronger and delivers remarkable value in a variety of applications. Closer available with less than 5.0 lbs. Opening force on 36 door. Maximum opening/hold open point with standard template. Extra Duty Arm (EDA) Extra duty arm features solid forged steel main and forearm for potentially abusive installations.