Micro Allergen Filter, Red, 24 x 30 x 1-In. United States Gypsum Good for general cleaning or

Good for general cleaning or applying sealants on any masonry surface

1/2' thick x 3' W

Effective in cloudy and cool conditions

Best for smooth surfaces like asphalt and concrete floors

The formula creates a bug barrier in minutes and delivers 3-months of protection

Micro Allergen Filter, Red, 24 x 30 x 1-In. United States Gypsum Good for general cleaning or24" x 30" x 1", red, micro allergen filtrete filter, 3 month filter, 90% effective at capturing large allergens like mold spores & pet dander, electrostatically charged, captures microscopic allergens like dust, smoke & smog, captures bacteria & particles that can carry viruses, meets the guidelines of the american lung association health house program, mrp rating 1000, lasts up to 3 months.