A+2000 Washable Electrostatic Permanent Custom Air Filter - 18" x 30" x 1" Quantity:Default these can be purchased in

these can be purchased in any conceivable size

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They are easy to clean by simply backwashing every month with cold water so you don‰۪t need expensive cleaners

some just refer to them as electrostatic filters

The "Practical Pleat" contains over 500% greater surface area than a MERV 10 one-inch pleat

A+2000 Washable Electrostatic Permanent Custom Air Filter - 18" x 30" x 1" Quantity:Default these can be purchased inYou may know them as washable air or even permanent air filters; some just refer to them as electrostatic filters. Either way, the "A+2000" brand Permanent Washable Electrostatic custom air filters are truly quality products, built to last a lifetime. Unlike some permanent custom air filters, the A+2000 uses no foam that may clog, degrade and restrict air flow, so it can provide a lifetime of dependable service. And there are no metal parts that could