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Home/ Lennox/ 18x20x1

Lennox 18x20x1 Filter

226 Lennox cabinet models use this filter size

Filter Size (Nominal)18x20x1
Actual Dimensions17.5 x 19.5 x 0.75
MERV RatingMERV 8
Filter TypeFiberglass
Compatible Models226 Lennox units

Buy Lennox 18x20x1 Replacement Filters

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Compatible Lennox Cabinet Models (226)

All models below use the 18x20x1 filter size. Find your model number on the label inside your filter cabinet door.

Cabinet Model #MERVFilter TypeUnit Type
LE251Z62MERV 8FiberglassFurnace
LE445B15MERV 13FiberglassAir Handler
LE461A11MERV 13PleatedPackaged Unit
LE902B13MERV 8PleatedHeat Pump
LE869B15MERV 11PleatedAir Handler
LE990X29MERV 8PleatedFurnace
LE893B78MERV 8FiberglassHeat Pump
LE804B85MERV 13PleatedPackaged Unit
LE344C12MERV 11FiberglassPackaged Unit
LE357X44MERV 8FiberglassFurnace
LE226Z13MERV 8HEPAHeat Pump
LE310B58MERV 13PleatedFurnace
LE598Z74MERV 11PleatedPackaged Unit
LE976A85MERV 8PleatedHeat Pump
LE954A65MERV 8HEPAAir Handler
LE150Z52MERV 13HEPAFurnace
LE716B97MERV 13PleatedPackaged Unit
LE361B71MERV 8PleatedPackaged Unit
LE549A88MERV 13FiberglassFurnace
LE706Z99MERV 8HEPAPackaged Unit
LE884X88MERV 13FiberglassPackaged Unit
LE261C81MERV 13FiberglassFurnace
LE949Z66MERV 8FiberglassFurnace
LE110C84MERV 8PleatedPackaged Unit
LE492A91MERV 8HEPAPackaged Unit
LE177C99MERV 11HEPAPackaged Unit
LE772A22MERV 8HEPAAir Handler
LE578A82MERV 13PleatedPackaged Unit
LE145Z17MERV 13PleatedHeat Pump
LE544B34MERV 13FiberglassPackaged Unit
LE961B86MERV 8PleatedPackaged Unit
LE375A58MERV 8HEPAPackaged Unit
LE253A60MERV 8HEPAFurnace
LE281X63MERV 11PleatedPackaged Unit
LE285Z25MERV 8FiberglassPackaged Unit
LE295B46MERV 8HEPAHeat Pump
LE248A13MERV 8HEPAHeat Pump
LE730B40MERV 11HEPAHeat Pump
LE494B81MERV 11PleatedFurnace
LE835C10MERV 13PleatedHeat Pump
LE208X39MERV 11PleatedHeat Pump
LE184Z52MERV 13HEPAPackaged Unit
LE128B27MERV 8PleatedHeat Pump
LE815C93MERV 13PleatedPackaged Unit
LE273B41MERV 11HEPAAir Handler
LE357A20MERV 8HEPAPackaged Unit
LE230Z44MERV 11HEPAFurnace
LE923B68MERV 8FiberglassFurnace
LE286Z22MERV 8FiberglassAir Handler
LE671C21MERV 11PleatedAir Handler
LE926C86MERV 11PleatedFurnace
LE433B27MERV 13PleatedPackaged Unit
LE750X55MERV 11HEPAFurnace
LE288A84MERV 11FiberglassAir Handler
LE860B16MERV 13HEPAHeat Pump
LE355B53MERV 13HEPAFurnace
LE316X61MERV 11HEPAAir Handler
LE541B33MERV 13HEPAPackaged Unit
LE158A70MERV 13FiberglassPackaged Unit
LE869X39MERV 13PleatedAir Handler
LE881X86MERV 13FiberglassFurnace
LE975X47MERV 13HEPAHeat Pump
LE493A93MERV 13PleatedHeat Pump
LE804Z14MERV 8FiberglassFurnace
LE297B38MERV 13HEPAAir Handler
LE844B10MERV 13PleatedHeat Pump
LE385A25MERV 8PleatedAir Handler
LE646A46MERV 8PleatedFurnace
LE143A20MERV 13FiberglassFurnace
LE904C70MERV 11PleatedHeat Pump
LE120Z31MERV 8PleatedAir Handler
LE593C68MERV 11HEPAFurnace
LE443Z66MERV 11FiberglassFurnace
LE836X13MERV 13FiberglassAir Handler
LE232Z63MERV 11PleatedFurnace
LE521A14MERV 13HEPAPackaged Unit
LE873C76MERV 11HEPAAir Handler
LE227X35MERV 11FiberglassPackaged Unit
LE522A29MERV 13HEPAFurnace
LE623A37MERV 8HEPAAir Handler
LE221B38MERV 13HEPAHeat Pump
LE258Z31MERV 13PleatedPackaged Unit
LE506Z12MERV 11HEPAPackaged Unit
LE635C56MERV 13FiberglassHeat Pump
LE286X99MERV 8HEPAHeat Pump
LE152X16MERV 11PleatedPackaged Unit
LE301X87MERV 11PleatedPackaged Unit
LE660X79MERV 13HEPAHeat Pump
LE906X95MERV 13HEPAAir Handler
LE805C13MERV 13PleatedHeat Pump
LE511B57MERV 11HEPAHeat Pump
LE547A35MERV 8PleatedHeat Pump
LE242A46MERV 11PleatedPackaged Unit
LE531A64MERV 13PleatedHeat Pump
LE390B17MERV 8HEPAAir Handler
LE652Z75MERV 11HEPAFurnace
LE554A37MERV 13PleatedAir Handler
LE423B70MERV 11FiberglassHeat Pump
LE272C82MERV 11HEPAHeat Pump
LE122C16MERV 13PleatedPackaged Unit
LE283C34MERV 11HEPAAir Handler
LE134B95MERV 8HEPAFurnace
LE371X52MERV 13FiberglassPackaged Unit
LE369B20MERV 13FiberglassFurnace
LE679B93MERV 13FiberglassAir Handler
LE744A36MERV 11FiberglassPackaged Unit
LE385B19MERV 13PleatedFurnace
LE462C25MERV 8PleatedAir Handler
LE699A62MERV 13FiberglassHeat Pump
LE193A46MERV 11HEPAAir Handler
LE392X80MERV 11HEPAFurnace
LE458C72MERV 13PleatedAir Handler
LE903Z99MERV 13HEPAPackaged Unit
LE935B64MERV 11HEPAFurnace
LE471C31MERV 8HEPAFurnace
LE647C61MERV 11HEPAAir Handler
LE879C91MERV 8FiberglassFurnace
LE179C73MERV 8HEPAHeat Pump
LE695A18MERV 8FiberglassPackaged Unit
LE245A15MERV 11HEPAAir Handler
LE264C35MERV 8FiberglassPackaged Unit
LE988C65MERV 8HEPAPackaged Unit
LE267X58MERV 13PleatedAir Handler
LE822X66MERV 11PleatedHeat Pump
LE998X64MERV 11HEPAHeat Pump
LE166B16MERV 13HEPAHeat Pump
LE402Z49MERV 11PleatedPackaged Unit
LE441B88MERV 11HEPAPackaged Unit
LE557C68MERV 13HEPAFurnace
LE261B59MERV 8HEPAHeat Pump
LE177C79MERV 13HEPAPackaged Unit
LE184A82MERV 11HEPAAir Handler
LE724A75MERV 13FiberglassPackaged Unit
LE248B20MERV 8PleatedPackaged Unit
LE566X70MERV 8FiberglassHeat Pump
LE501C95MERV 13HEPAAir Handler
LE638C62MERV 11HEPAFurnace
LE845Z95MERV 8FiberglassHeat Pump
LE348A56MERV 13FiberglassPackaged Unit
LE949C25MERV 11PleatedFurnace
LE372B52MERV 13FiberglassFurnace
LE739C57MERV 11FiberglassPackaged Unit
LE888C94MERV 8PleatedFurnace
LE574X46MERV 13FiberglassFurnace
LE933Z56MERV 11FiberglassHeat Pump
LE132A30MERV 11HEPAAir Handler
LE406X93MERV 11HEPAAir Handler
LE564A36MERV 13PleatedAir Handler
LE830B23MERV 13FiberglassAir Handler
LE897C22MERV 13HEPAFurnace
LE773A82MERV 13FiberglassFurnace
LE176Z94MERV 11FiberglassFurnace
LE450X58MERV 13PleatedHeat Pump
LE824Z15MERV 8FiberglassFurnace
LE697Z87MERV 13HEPAPackaged Unit
LE205Z27MERV 13FiberglassHeat Pump
LE581Z34MERV 13PleatedPackaged Unit
LE977A54MERV 13PleatedFurnace
LE460C12MERV 11HEPAAir Handler
LE763C42MERV 8HEPAPackaged Unit
LE998Z78MERV 8FiberglassPackaged Unit
LE852A49MERV 11PleatedAir Handler
LE989B66MERV 11FiberglassPackaged Unit
LE842X70MERV 13HEPAPackaged Unit
LE887A54MERV 8HEPAPackaged Unit
LE644X86MERV 11PleatedAir Handler
LE262C41MERV 11HEPAPackaged Unit
LE649X89MERV 11HEPAHeat Pump
LE836C21MERV 11FiberglassHeat Pump
LE749X70MERV 13HEPAHeat Pump
LE840Z47MERV 13PleatedAir Handler
LE595Z74MERV 11PleatedAir Handler
LE631X41MERV 8FiberglassPackaged Unit
LE619B94MERV 8HEPAPackaged Unit
LE163A97MERV 13FiberglassFurnace
LE683X33MERV 8HEPAFurnace
LE493Z39MERV 11FiberglassAir Handler
LE194C89MERV 8HEPAHeat Pump
LE552A34MERV 8PleatedFurnace
LE984X84MERV 13PleatedPackaged Unit
LE228A76MERV 11PleatedAir Handler
LE158A96MERV 11HEPAHeat Pump
LE494X84MERV 11FiberglassHeat Pump
LE353A99MERV 8FiberglassFurnace
LE395B64MERV 8FiberglassAir Handler
LE356X15MERV 11HEPAFurnace
LE478B21MERV 8HEPAAir Handler
LE530Z97MERV 11HEPAAir Handler
LE968Z62MERV 11FiberglassAir Handler
LE406C96MERV 8PleatedFurnace
LE160C45MERV 8PleatedHeat Pump
LE922B64MERV 11PleatedFurnace
LE574C85MERV 11HEPAPackaged Unit
LE418B91MERV 13PleatedFurnace
LE340Z83MERV 13HEPAPackaged Unit
LE775Z89MERV 11PleatedHeat Pump
LE571X65MERV 13FiberglassHeat Pump
LE346B90MERV 11PleatedPackaged Unit
LE375C48MERV 8FiberglassAir Handler
LE479A18MERV 11HEPAFurnace
LE657C50MERV 8FiberglassAir Handler
LE431X53MERV 8HEPAFurnace
LE817C31MERV 8FiberglassHeat Pump
LE538Z83MERV 8FiberglassAir Handler
LE973A49MERV 8HEPAPackaged Unit
LE393Z46MERV 11FiberglassAir Handler
LE382X57MERV 13FiberglassPackaged Unit
LE612X78MERV 11PleatedFurnace
LE880B52MERV 13PleatedPackaged Unit
LE447A22MERV 8FiberglassFurnace
LE269Z18MERV 11FiberglassAir Handler
LE723X49MERV 13PleatedFurnace
LE149C45MERV 11FiberglassPackaged Unit
LE704Z62MERV 13HEPAHeat Pump
LE721B48MERV 8PleatedAir Handler
LE377A20MERV 11FiberglassFurnace
LE967Z98MERV 13FiberglassAir Handler
LE268A42MERV 11FiberglassPackaged Unit
LE479Z35MERV 13HEPAHeat Pump
LE832A81MERV 11PleatedAir Handler
LE192B62MERV 11FiberglassPackaged Unit
LE937X33MERV 11PleatedFurnace
LE546B85MERV 8HEPAAir Handler
LE351X76MERV 8HEPAHeat Pump
LE910A22MERV 13FiberglassAir Handler
LE731B66MERV 13HEPAHeat Pump

How to Confirm Your Filter Size

The nominal size (18x20x1) is the labeled size. The actual measured dimension is 17.5 x 19.5 x 0.75. Always check the label on your existing filter or measure the slot before ordering replacements.

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