20 inch x 30 inchx 1 inch Budget Washable Filter

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20 inch x 30 inchx 1 inch Budget Washable Filter

MERV RATING: 4 Cut-to-Fit Your Size. Designed to protect only your Furnace/AC Equipment. 2 times more effective than fiberglass filters and will lasts up to 1 Year with Monthly Washings. Filters larger particles like dust and dirt. The MERV Rating System was developed by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), an independent, unbiased organization. A higher MERV indicates better performance. As the industry standard, the MERV rating should be considered the final word on filter performance.