A+2000 Washable Electrostatic Permanent Custom Air Filter - 20" x 35 1/2" x 1"You 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

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The "Practical Pleat" media is up to 28 times more effective at capturing particles than standard fiberglass panel filters

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so it can provide a lifetime of dependable service

Any Kind of Filter's Extended Surface Pleated Filters outperform ordinary furnace filters with medium efficiency and are designed for lower pressure drop

such as dust

This design enables A+2000 custom air filters to maintain performance over the years

You may know them as washable air or even permanent air filters

the more efficient a filter is at removing particles

One way to overcome this problem is to increase the surface area of the filter media

and the greater the pressure drop it creates

the A+2000 uses no foam that may clog