Actual dimensions are 20.75 x 20.63 x 5. Accumulair brand 20x21x5 Electro-Air SST 16C28S-010 replacement whole house air filters, exactly built to substitute for the original manufacturer Electro-Air SST 16C28S-010 filters. Completely box-formed with no assembly or combs required. MERV rated to ASHRAE specifications assuring particulate filtration as good or better than the name brand Electro-Air SST 16C28S-010 air filters. Photo: Example filter picture displayed is not to scale and is there to show construction only. Company names and Electro-Air SST 16C28S-010 P/N are used for air filter replacement identification only.
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.
Payment & Security
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