Actual Size: 20.75 x 24.25 x 4.38. Accumulair brand: 21x24x4.5 Rheem PD540020 replacement whole house air filters, exactly engineered to substitute for the original manufacturer Rheem PD540020 air filters. Completely box-formed - no forming or combs needed. MERV classified to ASHRAE 52.2 test standards ensuring operation to the level of the OEM Rheem PD540020 air filter. Photo: The sample filter pic shown is not to scale and is shown for style purposes only. OEM names and Rheem PD540020 part numbers are used for filter substitution purposes only.
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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