Home / Materials / Wildfire Defense Vent Screen — WDM 98 OSFM BML configuration
Wildfire Defense Vent Screen — WDM 98 OSFM BML configuration This is a listed vents assembly. Listing 8165-2397:0001. This site cites astm-e2886. Match the model and orientation. A listing is not a permit.
Listed · multiple independent channels. Active CAL FIRE BML listing 8165-2397:0001, expires 2027-06-30 (verified against the live BML 2026-08-25). Multiple independent channels agree; each is shown below.
▲ CAL FIRE BML 8165-2397:0001 · active ▲ documented attributes match 1 requirement
Status derived from the cited listings by a published rule, never hand-assigned. Each chip
above is one evidence channel and its direction. A listing is not a permit — the authority
having jurisdiction decides.
Wildfire Defense Mesh identifies its BML vent screen as WDM 98, a powder-coated stainless-steel framed screen offered in 6-by-17, 8-by-17, and 8-by-16-inch sizes. The current manufacturer comparison gives a 0.0657-inch aperture and 0.0177-inch wire and reports ASTM E84 Class A and ASTM E2886 testing; CAL FIRE OSFM listing 8165-2397:0001 describes the mesh values as approximately 1/16 inch and 0.018 inch under ASTM E2886.
Kind: listed-assembly.
Brand: Bushfire Mitigation Solutions (Wildfire Defense Mesh) . Listing evidence: OSFM WUI handbook 2026-08-25.
Page reviewed 2026-08-25. JSON (CC BY 4.0)
Documented attributes Each value below points to its field-level manufacturer, official-listing, test-report, or standard-body evidence.
Published requirement matches These links are generated from the cited attributes above. They do not decide installation or a project result.
Models named on the listing Model Application WDM 98 BML Vent Screen 6 × 17 foundation vent screen with 0.75-inch frame WDM 98 BML Vent Screen 8 × 17 foundation vent screen with 0.75-inch frame WDM 98 BML Vent Screen 8 × 16 foundation vent screen with 1-inch frame
The manufacturer's current precise mesh values round to the dimensions in the BML description. Match the WDM 98 BML product, finished size, flange, mesh, frame, orientation, fasteners, and opening coverage to OSFM listing 8165-2397:0001; ASTM E2886 use is vertical only. OSFM listing is not a permit. The authority having jurisdiction decides. Can I use this here
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In this place , this meets the adopted California ASTM E2886 vent rule.
The rule and every matching product for the United States
Save to my house How this product meets each requirement (8)
Requirement constraints (8)
Each table below compares this product's documented attributes against one published
requirement. That comparison is a fact about the product and the requirement, and does not
change from place to place, so it is printed once.
Requirement constraints (8)
Each table compares this product's documented attributes with one published
requirement. That comparison does not change from place to place, so it is printed
once here and linked from every jurisdiction below.
ORSC R327 vent mesh undocumented Field Required Documented value State Assembly role Assembly role is one of foundation vent, retrofit mesh, soffit vent retrofit mesh matched Mesh opening Mesh opening 0.0625 in–0.125 in 0.0657 in matched Corrosion resistant Corrosion resistant = Yes Yes matched Noncombustible Noncombustible = Yes Not documented undocumented
IWUIC vent mesh undocumented Field Required Documented value State Assembly role Assembly role is one of foundation vent, retrofit mesh, soffit vent retrofit mesh matched Mesh opening Mesh opening ≤ 0.125 in 0.0657 in matched Corrosion resistant Corrosion resistant = Yes Yes matched Noncombustible Noncombustible = Yes Not documented undocumented
Colorado CWRC vent mesh undocumented Field Required Documented value State Assembly role Assembly role is one of foundation vent, retrofit mesh, soffit vent retrofit mesh matched Mesh opening Mesh opening ≤ 0.125 in 0.0657 in matched Corrosion resistant Corrosion resistant = Yes Yes matched Noncombustible Noncombustible = Yes Not documented undocumented
2018 IWUIC Class 1–2 vent mesh undocumented Field Required Documented value State Assembly role Assembly role is one of foundation vent, retrofit mesh retrofit mesh matched Mesh opening Mesh opening ≤ 0.25 in 0.0657 in matched Corrosion resistant Corrosion resistant = Yes Yes matched Noncombustible Noncombustible = Yes Not documented undocumented
2021 IWUIC Class 1–2 vent mesh undocumented Field Required Documented value State Assembly role Assembly role is one of foundation vent, retrofit mesh retrofit mesh matched Mesh opening Mesh opening ≤ 0.25 in 0.0657 in matched Corrosion resistant Corrosion resistant = Yes Yes matched Noncombustible Noncombustible = Yes Not documented undocumented
2006 Utah UWUI Class 1–2 vent mesh undocumented Field Required Documented value State Assembly role Assembly role is one of foundation vent, retrofit mesh retrofit mesh matched Mesh opening Mesh opening ≤ 0.25 in 0.0657 in matched Corrosion resistant Corrosion resistant = Yes Yes matched Noncombustible Noncombustible = Yes Not documented undocumented
2006 Utah UWUI Class 3 vent mesh undocumented Field Required Documented value State Assembly role Assembly role is one of foundation vent, retrofit mesh, soffit vent retrofit mesh matched Mesh opening Mesh opening ≤ 0.25 in 0.0657 in matched Corrosion resistant Corrosion resistant = Yes Yes matched Noncombustible Noncombustible = Yes Not documented undocumented
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Wildfire Defense Vent Screen — WDM 98 OSFM BML configuration. FireApproved. https://fireapproved.com/materials/bushfire-mitigation-solutions-wildfire-defense-mesh-wildfire-defense/. Last verified 2026-08-25. Verify at the source. Every listing number and claim here links to its origin — listings change and local amendments govern, so check the current record before you specify.