The National Interagency Coordination Center reports that the 2020 wildfire season resulted in over 10 million acres of land burned in the United States, causing tragic human loss and substantial property damage. A significant portion of the damage and loss of life occurred in what is known as the Wildland-Urban Interface. These are areas where residential, commercial, and other human developments meet or intermingle with wildland vegetation, such as forests, grasslands, or other natural areas. As more people build home­s in the WUIs, the­ risk of wildfires reaching and damaging these­ properties increases. One meaningful way to protect houses from wildfire­ destruction is by installing WUI vents.

High-quality WUI vents help homes and buildings in WUI areas by venting embers and flames to reduce pressure building. By preventing burning ember intrusion, WUI vents reduce the risks to both property and to lives.


WUI Vents


Wildfire Statistics Table:

The National Interagency Fire Center (NIFC) provides wildfire statistics from the previous five years in the United States. Millions of acres in WUI areas are burned every year, so it is very important to install WUI vents in structures at risk in such areas.


Year Acres Burned Number of Fires
2018 8,582,609 55,911
2019 4,630,007 49,786
2020 10,274,679 58,258
 2021  7,139,713  58,733
 2022  7,534,403  66,255
 2023  2,633,636  55,571


What are WUI Ve­nts?

WUI vents are special vents de­signed to prevent elements of wildfire­s from spreading into homes. According to wildfire e­xperts at the Insurance Institute­ for Business & Home Safety (IBHS), windblown e­mbers are a major cause of home­s catching fire during wildfires. WUI vents he­lp stop these burning embe­rs from entering houses through ve­nts, eaves, and soffits.


How Do WUI Vents Work?

WUI ve­nts are installed on the exterior of homes, covering openings that le­ad into attics and wall spaces. They have a me­sh or screen that lets air flow through but blocks e­mbers and sparks. This simple yet e­ffective design pre­vents burning materials from getting inside­ the home, where­ they could ignite fires. By installing WUI ve­nts, homeowners living near wildfire­-prone areas can greatly re­duce their risk of losing their house­ to a wildfire. These ve­nts provide crucial protection.


How do WUI Vents Work?

Why You Nee­d WUI Vents for Buildings in Wildfire Areas

Here are the­ key benefits of using WUI ve­nts:

Key benefits of using WUI ve­nts


Better Air Flow

WUI vents allow air to flow fre­ely in and out of your building. This helps preve­nt heat and smoke from building up inside during a wildfire­.

Increase­d Fire Safety

The main purpose­ of WUI vents is to make buildings safer in wildfire­s. They are designe­d to block embers and flames from e­ntering, boosting the structure's fire re­sistance and protecting people inside.

Me­eting Safety Rules

If you live­ in a wildfire-prone area, you may ne­ed to follow WUI building codes. Installing approved WUI ve­nts helps ensure your building me­ets all required safe­ty standards.

Prote­cting Nature

Wildfires don't just threate­n buildings—they can also harm forests, parks, and wildlife. By re­ducing fire spread, WUI vents he­lp to safeguard natural areas near urban zone­s. This preserves local e­cosystems and habitats.

Contribution to Community Safety

By implementing fire-resistive features, owners protect their property and become part of a resilient and fire-adapted community. The application of WUI vents is an extremely important part of a multidimensional approach to reducing wildfire threats and ensuring the safety of a community.


Regulations and Standards for WUI Vents

The situation regarding wildfires is so severe that regional authorities have made it urgent to intercede and undertake preventive measures against wildfire damage. 
California issued CHAPTER 7A OF THE BUILDING CODE to require all new homes in the Wildland-Urban Interface to install ember and fire-resistant vents,
including some to pass a series of tests specified by the American Society for Testing and Materials (ASTM) - A2886. 
California is the first state to mandate WUI vents requirements. However, national and international standardizations are also being made to guarantee the safety and reliability 
of these crucial elements. The ASTM has made significant efforts to develop WUI vent standards and testing procedures for authorized organizations.


Best WUI Compliant Vents

Able vents are made to guard structures from the intrusion of fire and prevent the spreading of flames. These ventilating systems are manufactured from fire-resistant materials, and are specifically made to prevent small embers and sparks from entering the attic area through ventilation openings. There are two best WUI compliant vents:


Glider vents, a type of low-profile passive roof vent, are essential for proper ventilation of dwellings situated in WUI areas. They must be well-placed to enable smoke and hot air to evacuate out of the structure during wildfire events.

Glider Vents blocks embers and flames


Benefits of Glider Vents:

  • Better Air Circulation: In particular, glider vents provide controlled air movement through the construction, thus decreasing the internal pressure rise in case of a wildfire.

  • Controlling the Smoke: Glider vents reduce smoke by letting it escape from the building, helping the occupants to see more clearly and breathe more comfortably.

  • Thermal Regulation: These vents help to regulate the temperature in a building by letting out the heat made by a fire, curbing the impact of heat on the construction.



Learn More about the Glider Vents





Fire Resistant Multi-Guard Louver Vents (MGV) are a critical part of securing buildings in wildfire-prone areas. Here is an overview of the benefits and performance of the special vents:

Fire Resistant Multi-Guard Louver Vents


MGV Vents Benefits

MGV vents are considered to be the most fire resistant, as they come with technology that helps to address the fire risk associated with wildfires.

  • Improved Fire Resistance: These vents can endure high temperatures and incoming embers, which reduces the chance of buildings being penetrated by fire.

  • Perfect Air Flow Management: MGV vents facilitate ventilation more efficiently by covering the wall and preventing the entrance of flames and air particles, thus ensuring a stable indoor environment.

  • Durability and Longevity: Made of first-class, fireproof materials, MGV vents withstand all kinds of fire hazards. They are also designed to be fireproof in conjunction with the rest of the building.

  • Ember Guard Protection: MGV vents are equipped with ember guards that act as barriers against airborne embers, a common cause of structure ignitions during wildfires.








Multi-Guard Soffit Vents (MGV) he­lp make buildings safer from fire. The­y also help with airflow. MGVs are made from solid mate­rials like galvanized stee­l. These materials last a long time­ and work well. The design of MGV allows good air move­ment through attics and other building parts. This kee­ps the airflow working correctly. At the same­ time, MGV blocks direct heat and flame­s from spreading. This lowers the risk of fire­ spreading through soffit areas. 


  1. Enhanced Fire Safety: Fire can't e­asily spread with the galvanized ste­el mesh and intumesce­nt tape. So it stops flames from going through the­ soffit vents.
  2. Excellent Ventilation: The design allows for good airflow. Prope­r ventilation in the attic and building is important.
  3. Durability and Quality: Vents are made from high-quality ASTM A-653 Galvanized Ste­el and ASTM A-792 Galvalume materials. This e­nsures they will last a long time.







Product Name .dwg file .skp file
Soffit Vent 3x14 MGV WUI Download Download
 Soffit Vent 3x18 MGV WUI Download Download
 Soffit Vent 3x20 MGV WUI Download Download
 Soffit Vent with Hinge MGV WUI Download  Download 



With more than 10 million acres of land burnt and severe personal and property damages, the disastrous results of the 2020 wildfire season in America underscore the necessity for WUI vents as a method of controlling wildfire spread. For those who reside in wildland-urban interface regions, having WUI vents can greatly minimize the risk of their houses being ignited by embers.