Actual size is 17.25 x 20.75 x 4.38. Accumulair brand, 17.5x21x4.5 Rheem Protech 540010 substitute whole house filters, exactly constructed to substitute for the OEM Rheem Protech 540010 filters. Fully built - no forming or combs required. MERV graded to ASHRAE 52.2 test specifications establishing particulate capture equal to the original brand Rheem Protech 540010 air filter. Note: The sample air filter pic shown is not true to size and is included to show design purposes. Name brands and Rheem Protech 540010 identifier are used for air filter replacement purposes.
Shipping and Returns
- Our current lead times are 4-6 business days for stocked filters (standard 1"-5" thick sizes), and up to 8-12 business days for made-to-order filters (non-standard and 0.5" sizes). Delivery normally takes another 1-3 days depending on location.
- Shipping is FREE to the contiguous United States.
- 30-day 100% return policy.
Payment & Security
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