Norton Surface Mount Door Closer NHO, Full Cover 8501-689

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  • Commercial grade, architectural non-handed door closer for interior/exterior use on non-fire or fire rated doors
  • 8501 Non-hold Open Model; Self-closes door every time door is opened
  • Full Power Range Closer with adjustable sizes 1 through 6 to accommodate virtually any door opening width, and interior/exterior applications
  • Staked valves to prevent closer fluid leaks
  • Standard, separate and independent, latch, sweep and backcheck intensity valves.  Provides for adjustment of door speed, and backcheck delivers extra cushioning when door is forcibly opened beyond its pre-adjusted limits
  • Cast aluminum body to accommodate interactive steel components and operating conditions
  • Rack-and-pinion design for smooth constant control of the door through its full opening and closing cycle
  • All standard arm applications, allow doors to swing 180 degrees, conditions permitting
  • Includes Full-Size molded cover
  • Full size template for fast, easy mounting
  • 10-year limited warranty

Compliance Standards

  • ANSI/BHMA A156.4, Grade 1 certified
  • UL listed
  • UL10C compliant for positive pressure
  • ADA compliant


  • Housing Dimensions: — 2-1/2″ (H)  x 2-1/8″ (W) x  13″ (L)
  • Weight:  Appx. 8lbs
  • 1-1/4″ (32mm) diameter piston
  • 5/8″ (16mm) diameter pinion journals
  • 2-1/8″ (54mm) projection (standard covers)