Norton 91 Series Single Acting Offset Hung Door Closer | Grade 1 Overhead Concealed Closer

Norton 91 Series Single Acting Offset Hung Door Closer | Grade 1 Overhead Concealed Closer

APPLICATION

• Exterior or interior doors

• Door weight up to 250 lbs.

• Maximum door size: exterior 4' x 8', interior 4'6" x 8'

• Can be used in aluminum, hollow metal or wood frames

FEATURES

• Single acting, offset hung

• Heavy-duty cast iron closer body

• Forged arms

• Steel alloy track

• One-piece mounting plate

• Includes security track designed to eject foreign materials used to prevent a door from closing

• 1-1/4" piston diameter

• Dress cover plate included

• Adjustable spring 3-6 for larger doors or fire rated openings (specify 91)

• Adjustable spring 1-3 for lighter opening force (specify PH91 – ADA compliant)

• Handed

• Staked, brass adjusting valves

• Product shipped with all wood and all metal screws

• Separate and independent closing speed and latch speed valves

• Separate and independent hydraulic backcheck valve

• All weather fluid (accommodates a temperature range from - 40° to 150°F.)

• Hanging means by others. If products other than 3/4" offset pivots or 4-1/2" x 4-1/2" butt hinges are used, contact factory for special templating and pricing

• Hold open; can be achieved by adding hold open assembly to track. Specify 91H. (Standard hold open with pivot is 85°; 85°-105° with butt hinges)

• Minimum metal frame size 1-3/4" x 4"

• Direct replacement for LCN 2030

COMPLIANCE

• ANSI/BHMA A156.4 Grade 1

• UL-cUL listed

• UL10C positive pressure: 3-hours for hollow metal doors, 1-1/2 hour for wood doors. (PH91 not recommended)

• PH91 meets requirements for Americans with Disabilities Act (ADA)

SPECIFICATIONS

Model 91 shall be used for offset hung doors. Closer shall fit in a 1-3/4 x 4 aluminum tube. Closer shall have adjustable spring that complies to accessibility codes. Adjustable spring, backcheck, and closing speed valves must be accessible after door is installed. Where applicable, a hold open feature is achieved in the track. Closer shall be Grade 1 per ANSI/BHMA A156.4. Closer shall be fire rated UL10C for doors tested for overhead concealed products up to 3 hours.

NORTON 91 TECHNICAL INFO