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LCN’s most durable surface-mounted closer, designed for the most demanding applications

SKU: LCN-4040XP Categories: ,


This durable non-handed, surface-mounted heavy-duty closer, is designed for the most demanding high-use-and-abuse applications as well as for easy installation and maintenance.


  • Ease of installation and adjustment
  • Positive stop to improve staking and prevent screw from being backed out
  • Regulation valve indicators that add a visual reference for screw adjustment
  • Cast iron cylinder
  • Single-piece, heat-treated forged steel arms
  • Heat-treated 1-1/2″ diameter piston for extra hardiness and strength
  • Double heat-treated steel pinion with 11/16” journal diameter for greater wear-resistance
  • Full complement bearings with minimum 0.5” height that wear more evenly and are less susceptible to leakage
  • All-weather Liquid X fluid for consistent performance through every season, regardless of temperature changes
  • Independent speed adjustments for greater door control
  • Powder coat finish that lasts longer than spray lacquer
  • Universal, non-handed design
  • Adjustable spring sizes 1-6
  • Non-sized cylinder is adjustable for interior doors to 5’0″ and exterior doors to 4’0″
  • Meets ADA requirements
  • UL and cUL listed for self-closing doors without hold-open
  • Tested and certified under ANSI/BHMA A156.4 Grade 1
  • 30 year limited warranty