Description

Applications: Recommended for interior or exterior doors (retrofit applications or for a retro look) including:

– Applications:
• Historical Buildings
• Courthouses
• College or Universities
• Churches or Worship Centers

Spring Tension Size:
• Adjustable Spring Power: B/D – Sizes 2 and 4
• Maximum Door Size: Interior – / Exterior 44″ (112cm)
• For interior (and) exterior door metal and wood doors

Product Description & Features:
• RA – Regular Arm
• Self drilling/self tapping and machine screws standard (Regular arms only)
• Closer is rack-and-pinion type enclosed in a cast aluminum alloy shell.
• Closer spring shall be clock-type coil spring and shall be adjustable through a wide range of closing power.
• Closer shall have a hex-key operated regulating valves to control the closing speed, latch speeds, and adjustable backcheck feature.

Compliance Standards:
• ANSI/BHMA A156.4 Grade 3 Specifications
• All Norton series 78-B/D closers with non-hold open arms are listed by Underwriters Laboratories for labeled fire doors. This includes compliance to UL10C and UBC-72 (1997) for 3-hour assemblies. The product is manufactured in an ISO 9001 facility. These closers are also listed by the New York City Materials and Equipment Acceptance Division.

Door Closer Finishes:
• 689 – Aluminum
• 690 – Dark Bronze