Pad Refills (Pack of 6 Pads) - 21" x 23" x 1" Quantity:Default the "A+2000" brand Permanent Washable

the "A+2000" brand Permanent Washable Electrostatic custom air filters are truly quality products

Finally they are factory made so you don‰۪t have to deal with the hassle of trying to cut and size your custom air filters and they come with a full warranty

You never have to hassle with disposable filters that will end up in a landfill again

the A+2000 uses no foam that may clog

This is designed to fit into 1" Return Air Grilles

Pad Refills (Pack of 6 Pads) - 21" x 23" x 1" Quantity:Default the "A+2000" brand Permanent WashablePACK of 6 pads for Pad and Frame Air Filters Filtering inserts are anti microbial and are more efficient in capturing particles, such as dust, ragweed, pollen, etc., from the air stream, than standard fiberglass filters purchased at retail outlets. Filtering inserts are shipped in an easily stored packet.