Actual Size: 19.75 x 24.25 x 4.75. Accumulair brand, 20x25x5 Day and Night P101-MF20 compatible whole house air filters, exactly engineered to be an alternative to the OEM Day and Night P101-MF20 filters. Fully assembled with no forming or combs required. MERV rated to ASHRAE specifications ensuring performance equal to the original brand Day and Night P101-MF20 air filters. Photo: Sample air filter pic shown is not the actual dimensions and is there to show design purposes only. Company names and Day and Night P101-MF20 part numbers are used for air filter style identification use.
Shipping and Returns
- Our current lead times are 10-14 business days for standard filters (1"-6" thick sizes), and up to 14-21 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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