21x21x1 Lifetime Air Filter - Electrostatic Washable Permanent A/C Silver Steel Frame 65% more efficiency by Kilowatts Energy Center at N Online Agency. MPN: 21211AFSV-94%. Hurry! Limited time offer. Offer valid only while supplies last. Replaces standard 21x21x1 sized disposable filters. Standard filters are generally undercut 3/8 inch. The actual size of this filter is 20-5/8 x 20-5/8 x 7/8. In the center, non-woven layer retains debris in a maze of fibers designed to maximize air flow even when soiled. Rated by independent testing laboratory at over 65% peak arrestance (particle filtering efficiency), this filter has 20 times the filtering capabilities of a disposable fiberglass filter.Highest filtering efficiency available
Have questions about this item, or would like to inquire about a custom or bulk order?
If you have any questions about this product, contact us by completing and submitting the form below. If you are looking for a specif part number, please include it with your message.