20 in. X 20 in. Fire Stopping Vent Base Flashing - VULCAN 20 in. X 20 in. FIRE STOPPING DORMER VENT BASE FLASHING, 100 Sq Inches NET FREE-VENTING. PRICE/EACH.
20 in. X 20 in. Fire Stopping Vent Base Flashing
$66.00 SALE $50.95
(Savings: $15.05)
  Order Options:  
  Add To Cart  
  Add To Saved Cart  


Vulcan 20 inch X 20 inch Fire Stopping Dormer Vent Base Flashing. Price/Each.

Ordering Notes:

  • Shipping leadtime: 1-2 business days.


Vulcan Fire Stop Honeycomb Matrix with Screen Mesh built into galvanized steel frame. SIZE: 20x20 inch Overall square flange. Inside vent area is 13.5x13.5 inch (3.25 inch flange all around vent area). 105 Sq. Inches Net Free Vent Area. Vulcan Vent matrix is 1/4 inch hexagon expanded aluminum, coated with an intumescent coating from Firefree Coatings Inc. The coating swells up when exposed to high temperatures and closes off the cells, effectively blocking off fire & ember intrusion. The Vulcan Vent™was designed to meet the new California Building code SFM 12-7A of the California Wildland-Urban Interface fire code program. See the California Approval.


  • Provide a fire stopping base flashing (sub-flashing) for most all types of roof mounted vents, including dormer vents, eyebrow vents, box vents and more.


  • Available in popular industry standard sizes and mounting configurations-
  • 16.5 x 16.5 base inch (10x10 top vent opening), 54 sq inches net free-vent area
  • 15 x 26.750 inch base (8 x 19 inch top vent opening), 109 sq inches net free-vent area


Email us at sales@bestmaterials.com or
Call us at 1-800-474-7570 or 602-272-8128
You'll get a prompt reply!

similar product terms: vulcan vent, vulcan vent retailer, fireproof vent, fireproofvents, flameproof vent, flame proof vent, fire proof vent, fire proof vents, vulcan technologies, ember resistant vent, brandguard vents, nfva vent, california fire code vent, ch7a code vent, fire code vent, ch7a building code vent, fireproof soffit vent, fire vent, fire stopping vent, fire stop eave vent, fire proof eave vent, foundation vent, fire proof foundation vent

A CSG Group Company

Shop with
Peace of Mind!