Firex Open Smoke Vent

The Moffitt Firex automatic smoke vent is designed to exhaust smoke and restrict fire from spreading. The Firex is the key to protecting your equipment, your building, and your personnel.

Not only does the Firex help smoke escape, but it also makes extinguishing the fire easier. The National Fire Protection Association (NFPA) has proven that the addition of a proper fire vent will assist firefighters in accessing the source of the fire and improve their ability to take direct action against it. Getting to the fire quickly can prevent smoke logging, explosions, lateral fire spread, water temperature, and steel softening. Heat responsive ventilation equipment, like the Firex, can make a Firefighter’s job safer and more effective.

Tens of thousands of Firex automatic smoke vent units have been produced since its introduction in 1956. Improvements and updates have been made over the years, but it remains the same reliable heat and smoke ventilator.


Standard Features
  • Closed Height: 15 ¾ inches
  • Opening width: 4 to 6 feet
  • Opening length range: 4 – 9 feet
  • Venting area range: 16 ft2 – 54 ft2
  • Wind uplift: 40 lbs./ft2 (pounds per square feet)
  • Net weight range: 345 pounds – 590 pounds
  • Operators: Automatic or Manual
  • Lids: Aluminum


Optional Features
  • Aluminum base option
  • Translucent, polycarbonate lids for natural daylighting
  • 16-gauge galvanized steel lids with G90 mill finish
    • Other finishes available upon request.
  • Electric, thermal resettable links
  • Electrical Testing Lab (ETL) registered links available
  • Burglar bars
  • Bridge splices available to combine multiple units

Product Catalog

Download brochure

Additional Downloads

Product Testing and Certification
  • Computer Modeled, Factory Tested, & Field Tested
Product Mounting
This unit is designed to be mounted with or without a curb.