• UL Fire and Panic listed                                                                                               Note: Any retrofit or other field modification to a fire rated opening can potentially impact the fire rating of the opening, and Sargent Manufacturing Company makes no representations or warranties concerning what such impact may be in any specific situation. When retrofitting any portion of an existing fire rated opening, or specifying and installing a new fire-rated opening, please consult with a code specialist or local code official (Authority Having Jurisdiction) to ensure compliance with all applicable codes and ratings.
  • NB- Device allows free access for wheelchairs and carts. No bottom strike eliminates tripping potential
  • Specify NB- for less bottom rod
  • All functions determined by outside trim
  • Devices are ANSI A156.3 - Grade 1


  • Door Types: Hollow metal or extruded aluminum. 1-3/4"(44mm) minimum thickness; For doors over 1-3/4"(44mm) to 2-1/4" thick, specify thickness and order as 31-option. 1-3/4" (44mm) minimum stile width required. Stile must be hollow with inside dimension of at least 1-3/8" (35mm)square. 
  • Door Widths:
    E Rail - 24" to 32" (61cm to 81cm) door widths
    F Rail - 33" to 36" (84cm to 91cm) door widths
    J Rail - 37" to 42" (94cm to 107cm) door widths
    G Rail - 43" to 48" (110cm to 122cm) door widths    
  • Strike: 650 Top Strike & 606 Bottom Strike (Panic & Fire Rated)
  • Dogging Feature: Hex key dogging standard; Cylinder dogging available (16-)
  • Electric Options: AL-alarm, PL-SARGuide photoluminescent coated, BT-Beacon, TL-SARGuide illuminated touchpad, 53-LX latchbolt monitor, 54-Outside lever monitoring, 55-Request-to-exit signal- rail monitoring, 56-ELR remote latch retraction, 57-Delay egress & electromagnets, 58-Electric dogging, 59-Electroguard- self contained delayed egress (NB-excluded) 
  • Mounting Fasteners: Supplied standard with machine screws
  • Top bolt: Stainless Steel
  • Device Centerline from Finished Floor: 41” (1041 mm) for standard applications  38" (965mm) for elementary schools and to meet local accessibility standards when a 100 series Auxiliary control is used
  • Door/Opening Height: Must be specified - 120" (3048mm) Max Door Opening
  • Center Case Dimensions: 8-3/8" (213mm) x 2-5/8" (67mm)
  • Projection: Pushbar Neutral – 3" (76 mm); Pushbar Depressed – 2-1/8" (54 mm)

Ideally suited for

  • Full-glass pairs of doors
  • Aluminum entrances
  • Aesthetic applications

 Schools  Healthcare  Commercial 

Note: 8400 & 12-MD8400 can be used as NB- Device by simply not installing the bottom rod/bolt.

Note: 12-NB Applications require thermal pin, Thermal Pin supplied when ordered as a 12-NB Device.

*Prefixes/Options may vary between the 8400 & NB-8400 Please see catalog Prefixes/Options for full details.

ASSA ABLOY, the global leader in door opening solutions

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