Tier1 30x30x1 Premium MERV 11 Air Filter/Furnace Filter Replacement 6 Pack

Features :

• More efficient than our MERV 8 filter, and captures even smaller particles (1-10 microns in size).
• Doesn't promote the growth of bacteria, mold, mildew, or fungi so they're a great choice for families with small children
• Similar to the 3M Filtrete Ultra Allergen filter
• Rated UL Class 2 by Underwriters Laboratories

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