Actual face dimensions are 5/8" under listed dimensions. Header thickness: 13/16". MERV 9: white. MERV 11: orange. MERV 13: pink. MERV 15: yellow. Filter Hut's 24x24x21 bag filters are made of synthetic filter material for high efficiency. Filter Hut's 24x24x21 bag filter is resistant to abrasion, moisture and microbial growth, and are non-carcinogenic. Every 24x24x21 bag filter is constructed with adhesive seals around each pocket and inside the header, creating great resistance to blow-out. Microbial growth and moisture-resistant. Standardized to ASHRAE 52.2 grades. Conforming to U.L. standard 900. Rated to 160 F degrees. Database and 24x24x21 bag filter statements are up to date as of 03/24/2020.
Shipping and Returns
- Shipping is FREE to the contiguous United States.
Due to shortages and demand the current lead time is up to 10 business days to process.
Orders take 1-3 business days to process.
(Custom & bag filters take 5-7 business days.)
Delivery normally takes another 1-3 days depending on location.
- 30-day 100% return policy.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.