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Hoover Treated Wood Products

Hoover manufactures pressure-impregnated fire-retardant-treated wood, including exterior ExteriorFireX and interior Pyro-Guard lumber and plywood listed in CAL FIRE OSFM categories 2520 and 2580.

Listing health: 1 listed. Soonest expiry: 2027-06-30. Statuses derive from the live program data by a published rule.

Manufacturer site

Product record	Status	Expires
Hoover ExteriorFireX treated lumber and plywood	Listed	2027-06-30

Sources

ExteriorFireX exterior fire-retardant-treated wood — Hoover Treated Wood Products (manufacturer). Accessed 2026-08-25.
OSFM Building Materials Listing search — CAL FIRE OSFM (listing-body). Accessed 2026-08-25.