Actual face dimensions: 5/8 inch less than listed dimensions. Header thickness is 13/16 inches. MERV 9 is white. MERV 11 is orange. MERV 13 is pink. MERV 15 is yellow. Filter Hut's 20x24x21 bag filters utilize synthetic filter material for high efficiency filtration. Our 20x24x21 bag filter is non-carcinogenic and abrasion, moisture and microbial growth-resistant. Every 20x24x21 bag filter is constructed with seals made of adhesive inside the header and around each pocket, giving great blow-out resistance. Microbial growth and moisture-resistant. Standardized to ASHRAE 52.2 ratings. Rated under U.L. standard 900. Classified to 160 degrees F. Catalog and 20x24x21 bag filter variations current as of 03/24/2020.
Shipping and Returns
- Shipping is FREE to the contiguous United States.
- Our current lead times are 3-5 days for stocked standard filters, and up to 24 days for non-standard, 0.5" , and bag filters.
Delivery normally takes another 1-3 days depending on location.
- 30-day 100% return policy.
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