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Filtrete 23-in W x 20-in L x 1-in Washable MERV 4 HVAC Basic Flat Air Filter
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These quality washable MERV 4 air filters are built to last and are interchangeable with 1 inch disposable filters and can be used again and again
This design enables the filter to maintain its performance over the years; unlike some permanent air filters, the filter uses no foam that may clog, degrade and restrict air flow, so it can provide a lifetime of dependable service
Easy to clean - simply backwash every month with cold water, no expensive air filter cleaners needed
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