MEG (Material Exterior Grade), 4-1/4' feet width x 0.315 inch thick x 10 feet length
This is a material class, not a wall or roof assembly listing. Listing 8170-2378:0001.
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ABET USA's MEG exterior panel held a wildfire-area listing in California, and that listing has since lapsed.
The panel in question is the 4-1/4 foot wide, 0.315 inch thick, 10 foot long size, a thermally fused siding product carried under listing number 8170-2378:0001 in category 8170. Testing behind that listing ran the panel through ASTM E84 with the extended twenty-minute burn, and the number showed up in the state fire marshal's roster of wildfire-area products as recently as September 2025.
That roster is not where the panel sits anymore. Checked against the live Building Materials Listing in late August 2026, the same number does not appear. Three things produce that kind of gap: the listing's term ran out, the manufacturer pulled it, or the product moved to a new number. The data here does not say which one happened to this panel, only that the gap exists.
For anyone specifying this panel on a wall in a wildfire-rated zone, that gap is the whole story. Drawings drawn from last year's roster, or from a manufacturer's cut sheet, describe what used to be true, not necessarily what an inspector will find when checking the current database. Before this panel goes up, the exact model and size need to be looked up again, and if the number does not come back, the panel is not listed, regardless of what the September 2025 paperwork shows.