Zephyr 18x24x3 VGF Merv 13 Media Air Cleaner Replacement Filter for Return Air Grilles. 2 Pack

The 18x24x3 Merv 13 VGF Series 3 inch Deep 6-month Pleated Filters are a filter upgrade for your Return Air Filter Grilles that traditionally use 1 inch 3-month filter. Turns almost any air filter return into a media air cleaner. Gasketed Filter Eliminates dirty air bypass. Merv 13 High Efficiency Filter removes Virus carriers, flu, smoke, allergens, dust and mold from your breathing air for 6 months Lower static pressure drop than 1" MERV 8 filters. Fits most 1" Return Air Grilles without modification. Robust construction and wire mesh support. The heavy-duty moisture-resistant filter frame retains its strength and shape even in high humidity environments, ensuring longevity and consistent performance. Filter lasts up to 6 months. Made in the USA.