Actual dimensions are 20.75 x 20.75 x 4.38. Brand: Accumulair. 21x21x4.5 Rheem RXHF-E21AM13 style whole house filters, exactly designed to replace the name brand Rheem RXHF-E21AM13 air filters. Fully box-formed with no assembly or combs required. MERV rated to ASHRAE 52.2 test specs ensuring particulate filtration equal to the OEM Rheem RXHF-E21AM13 filter. Notice: Sample filter pic displayed is not true to size and is included to show design purposes only. Name brands and Rheem RXHF-E21AM13 P/N are listed for air filter substitution identification.
Shipping and Returns
- Shipping is FREE to the contiguous United States.
- Our current lead times are 3-5 business days for stocked filters (standard 1"-5" thick sizes), up to 3 weeks for made-to-order filters (non-standard and 0.5" sizes).
Delivery normally takes another 1-3 days depending on location.
- 30-day 100% return policy.
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