This Accumulair brand 22x28x4 air filter is specifically designed to be compatible with same sized 22x28x4 air filter specification. Pleated electrostatically charged filter material traps airborne particles according to the ASHRAE MERV specification. Material is free of chemicals. Note: Example filter image as shown is not to scale and is displayed for construction purposes only. Catalog and 22x28x4 air filter specs are up to date as of 03/24/2020.
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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