The MoffittVent™ is the most effective and efficient natural ventilation device on the market today. This large capacity ventilator exhausts large volumes of warm air without letting any rain in.  Wind direction and velocity do not negatively affect performance. In fact, higher winds can improve ventilation in many situations. The standard model can withstand winds up to 130 MPH at grade. Adjustments can be made to accommodate higher wind speed requirements.

The MoffittVent can be custom engineered to meet almost any local building codes or specific requirements. It can be adapted for high snow loads, corrosive environments, or even painted a special color to match the other architecture. It can be mounted on the ridge, the edge, or down-slope. If the building needs a MoffittVent, one can be designed for it.

Moffitt has custom designed, manufactured, and installed The MoffittVent natural ventilator for over 60 years.

Standard Features
  • Throat sizes: 24” – 180”
  • Lengths: 10’ – 1000’+
  • Hot-Dip Galvanized Steel Frame
  • Galvalume sheeting with Mill Finish
  • Transverse baffles increase air flow through the unit.
  • 100% free area to face area ratio


Optional Features
  • Sheeting Options: Aluminum, Stainless Steel, Fiberglass
  • Sheeting Paint Options: Kynar® Exterior with Wash Coat Interior; Kynar® Interior and Exterior, other specialty coatings
  • Frame Options: Corrosion Resistant, Painted Frames, Stainless
  • Bird Screen
  • Damper: Manual, Motorized

Product Catalog

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Product Testing and Certification
  • Airflow performance test tunnel
  • Weather tightness
  • Wind
  • Damper cycling
  • High Temperature
Product Mounting
The MoffittVent™ can be ridge, flat, single slope, or down slope mounted.

Product Video