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Seismic Fire Barrier Wall System (EJN-FLW/FLWw)

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The Nystrom Seismic Fire Barrier Wall System is constructed of fire retardant materials to contain fires from spreading through joint openings. Available in 1, 2 or 3 hour ratings. The system installs with tongue and groove process with limited or no caulking requirements.


  • Fire-Rated
  • UL Listed
  • Easy Installation
  • Thermal Movement
  • Seismic Movement

Movement Thermal: Horizontal and Vertical
Seismic: +/-50% Lateral Shear
  • Inside: All sizes
  • Top: 4 inches and greater
Joint Size 2 inches to 24 inches
  • EJN-FLW140: 6.5 Linear Feet
  • EJN-FLW: 10 Linear Feet, up to 12"; 4 Linear Feet, 14" and up
Fire-Rating 1, 2 or 3 Hour (3HR is available for 6” and larger joint sizes)
Application Interior
Installation Wall
Compliance Tested in accordance with:
  • UL 2079 and CAN ULC S-115 “FTH” (FTH: Rating Fire, Temperature and Hose)
  • ASTM E119, E1399, E1966
  • BS EN 1366.4

Additional Movement, Transitions and Weatherproof Options are Available Upon Request.

Warranty 1 year

Order Guide

Use the table below to guide specification of available options. The part number components are indicated in BOLD ORANGE text.

at mean T° F
EJN-FLW140-200 Wall to Wall/Corner 2" (51mm) 2" (51mm)
EJN-FLW140-300 Wall to Wall/Corner 3" (76mm) 3" (76mm)
EJ-FLW140-400 Wall to Wall/Corner 4" (102mm) 4" (102mm)
EJ-FLW-400 Wall to Wall/Corner 4" (152mm) 4" (152mm)
EJ-FLW-600 Wall to Wall/Corner 6" (152mm) 6" (152mm)
EJ-FLW-800 Wall to Wall/Corner 8" (203mm) 8" (203mm)
EJ-FLW-1000 Wall to Wall/Corner 10" (254mm) 10" (254mm)
EJ-FLW-1200 Wall to Wall/Corner 12" (254mm) 12" (254mm)
EJ-FLW-1400 Wall to Wall/Corner 14" (354mm) 14" (354mm)
EJ-FLW-1600 Wall to Wall/Corner 16" (406mm) 16" (406mm)
EJ-FLW-1800 Wall to Wall/Corner 18" (457mm) 18" (457mm)
EJ-FLW-2000 Wall to Wall/Corner 20" (508mm) 20" (508mm)
EJ-FLW-2200 Wall to Wall/Corner 22" (508mm) 22" (508mm)
EJ-FLW-2400 Wall to Wall/Corner 24" (508mm) 24" (508mm)
EJ-FLW-400W Wall to Corner 4" (152mm) 4" (152mm)
EJ-FLW-600W Wall to Corner 6" (152mm) 6" (152mm)
EJ-FLW-800W Wall to Corner 8" (203mm) 8" (203mm)
EJ-FLW-1000W Wall to Corner 10" (254mm) 10" (254mm)
EJ-FLW-1200W Wall to Corner 12" (254mm) 12" (254mm)
EJ-FLW-1400W Wall to Corner 14" (354mm) 14" (354mm)
EJ-FLW-1600W Wall to Corner 16" (406mm) 16" (406mm)
EJ-FLW-1800W Wall to Corner 18" (457mm) 18" (457mm)
EJ-FLW-2000W Wall to Corner 20" (508mm) 20" (508mm)
EJ-FLW-2200W Wall to Corner 22" (508mm) 22" (508mm)
EJ-FLW-2400W Wall to Corner 24" (508mm) 24" (508mm)


NYSTROM warrants the Seismic Wall Fire Barrier Expansion Joint System to be free from manufacturing defects in materials, factory finishes, and workmanship for a period of FIVE (5) yearS from the date of shipment.

Should a product fail to function in normal use within this period, Nystrom shall furnish a replacement or new part at Nystrom's discretion. Failure to use product in methods consistent with Nystrom product manuals shall relieve Nystrom of any liability. Our liability under this warranty excludes installation or removal costs involved in the product replacement and excludes any responsibility for incidental or consequential damage of any nature.

For information on a warranty claim, please visit our Warranty Support section or call 800 547-2635.

Warranty Support


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Description Model Shop Drawing CAD Revit/BIM Data Sheet 3-Part Specs LEED Installation Warranty
Wall to Wall/Corner – Inside Mount EJN-FLW140-200 to 400 PDF DWG PDF PDF PDF
Wall to Wall – Inside Mount EJN-FLW-400 to 2400 PDF DWG PDF PDF PDF
Wall to Corner – Inside Mount EJN-FLW-400W to 2400W PDF DWG PDF PDF PDF
Wall to Wall – Top Mount EJN-FLW-400-TM to 2400TM PDF DWG PDF PDF PDF
Wall to Wall – Top Mount EJN-FLW-400W-TM to 2400-TM PDF DWG PDF PDF PDF