Foundation Vents

Foundation vents built to protect.

Foundation vents sit at the base of the home just above the ground, providing critical ventilation leading to moisture evaporation in the crawlspace, cellar, or basement. Dangerous embers that travel before a fire can get blown against the home and enter through the vents, potentially causing the home to burn from the inside out.

The vents are the most vulnerable
places in the home.

Make sure that the most exposed areas of the house have adequate protection in place in the case of ember attacks. The Vulcan Vent is equipped with a stainless steel ember-catching mesh screen and a honeycomb intumescent coating that expands and blocks flame intrusion and ember intrusion in high temperatures from a wildfire. 

Vulcan Vents Siding Materials: 

  • Stucco Foundation Vent
  • Foam Back Foundation Vent
  • Fiber Cement Foundation Vent
  • Wood Siding Foundation Vent 

*Some Vulcan Vent foundation vents, eave vents, and soffit vents are in multiple categories because of cross-application capability of certain models.

Foundation Vent Flange Diagrams

Flange Front Foundation Vents

Stucco Foundation Vent

Foam Back Foundation Vent

Fiber Cement Foundation Vent

* The above installation diagrams are for general and conceptual, illustration purposes only! For specific installation instructions, please consult a licensed building professional.
foundation vent with free flowing ventilation

Baffle-free design
for efficient airflow.

Vulcan Vents foundation vents use a baffle-free design to encourage air to circulate freely under floors in the summer. A ventilation system that encourages adequate circulation reduces the risk of mildew, mold, and rot from water condensation under your home.

Vulcan Vents do not use airflow-interrupting baffles, resulting in more venting per square inch for the net free area.

Ember and fire-resistant vents are required under California’s Chapter 7A building codes located in high-risk fire zones otherwise known as the Wildland-Urban Interface (WUI). As such, Vulcan Vents are recommended for homes by the California State Fire Marshal (OSFM). 

*Foundation Vulcan Vents available for new construction and in retrofit kits to install on existing vents.

Vulcan Vent
Features

Honeycomb matrix closing technology with ember-catching screen mesh built into galvanized steel frame

Net free vent area (96 sq. in) providing open soffit ventilation

Designed to meet the new California Building code State Fire Marshal (OSFM) 12 Chapter 7A of the California Wildland-Urban Interface (WUI) fire code program

Passed the American Society for Testing and Materials (ASTM) E2886 to effectively block ember entry

It’s time for your home to protect itself.

Flange Styles

Standard Finishes

G90 Galvanized, Stainless, Copper, Bonderized

Mfg. Part # Description NFVA(square inches) Flange Style Cut Out(inches) Spec. Sheet(download) Sample Image
VFS414FB 4" x 14" FOAM BACK FLANGE SET BACK 1-1/2" 24 Foam Back 3.5 X 13.5 download icon view icon
VFS414FC 4" x 14" FIBER CEMENT FLANGE SET BACK 3/8" 24 Fiber Cement 3.5 X 13.5 download icon view icon
VFS414FF 4" x 14" FLANGE FRONT 24 Flange Front, Retrofit 3.5 X 13.5 download icon view icon
VFS414S 4" x 14" STUCCO SET BACK 3/4" 24 Stucco 3.5 X 13.5 download icon view icon
VFS614FB 6" x 14" FOAM BACK FLANGE SET BACK 1-1/2" 41 Foam Back 5.5 X 13.5 download icon view icon
VFS614FC 6" x 14" FIBER CEMENT FLANGE SET BACK 3/8" 41 Fiber Cement 5.5 X 13.5 download icon view icon
VFS614FF 6" x 14" FLANGE FRONT 41 Flange Front, Retrofit 5.5 X 13.5 download icon view icon
VFS614S 6" x 14" STUCCO SET BACK 3/4" 41 Stucco 5.5 X 13.5 download icon view icon
VFS814FB 8" x 14" FOAM BACK FLANGE SET BACK 1-1/2" 62 Foam Back 7.5 X 13.5 download icon view icon
VFS814FC 8" x 14" FIBER CEMENT FLANGE SET BACK 3/8" 62 Fiber Cement 7.5 X 13.5 download icon view icon
VFS814FF 8" x 14" FLANGE FRONT 62 Flange Front, Retrofit 7.5 X 13.5 download icon view icon
VFS814S 8" x 14" STUCCO SET BACK 3/4" 62 Stucco 7.5 X 13.5 download icon view icon

*Some Vulcan Vent foundation vents, eave vents, and soffit vents are in multiple categories because of cross-application capability of certain models.