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Home/ Lennox/ 20x20x4

Lennox 20x20x4 Filter

261 Lennox cabinet models use this filter size

Filter Size (Nominal)20x20x4
Actual Dimensions19.5 x 19.5 x 3.75
MERV RatingMERV 11
Filter TypeHEPA
Compatible Models261 Lennox units

Buy Lennox 20x20x4 Replacement Filters

Verify size against your unit label before ordering.

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Compatible Lennox Cabinet Models (261)

All models below use the 20x20x4 filter size. Find your model number on the label inside your filter cabinet door.

Cabinet Model #MERVFilter TypeUnit Type
LE426A40MERV 11HEPAFurnace
LE933B95MERV 13PleatedHeat Pump
LE320X73MERV 8HEPAPackaged Unit
LE116Z95MERV 11PleatedFurnace
LE174Z23MERV 13HEPAAir Handler
LE860A52MERV 13FiberglassHeat Pump
LE957X15MERV 8HEPAFurnace
LE398Z70MERV 11PleatedFurnace
LE100C96MERV 8HEPAAir Handler
LE577B96MERV 13PleatedHeat Pump
LE441Z59MERV 8HEPAFurnace
LE339C62MERV 8PleatedFurnace
LE872B87MERV 11HEPAAir Handler
LE109C93MERV 11HEPAHeat Pump
LE474A97MERV 8FiberglassAir Handler
LE104A22MERV 8FiberglassFurnace
LE992B91MERV 8PleatedHeat Pump
LE672A34MERV 8PleatedHeat Pump
LE167Z94MERV 8HEPAFurnace
LE902A53MERV 13PleatedHeat Pump
LE773C53MERV 13PleatedFurnace
LE989X76MERV 13PleatedFurnace
LE817B23MERV 13FiberglassHeat Pump
LE553Z56MERV 13FiberglassHeat Pump
LE332B85MERV 11HEPAPackaged Unit
LE532B76MERV 8HEPAAir Handler
LE752C48MERV 13FiberglassAir Handler
LE703Z54MERV 11PleatedPackaged Unit
LE149A21MERV 11HEPAFurnace
LE357A86MERV 8FiberglassFurnace
LE875B95MERV 13FiberglassFurnace
LE372Z78MERV 13FiberglassHeat Pump
LE562C84MERV 13FiberglassFurnace
LE927A88MERV 11HEPAAir Handler
LE167Z53MERV 8FiberglassAir Handler
LE557X45MERV 8FiberglassPackaged Unit
LE622B55MERV 8FiberglassPackaged Unit
LE287X93MERV 8HEPAPackaged Unit
LE244B99MERV 13FiberglassFurnace
LE557C55MERV 13FiberglassPackaged Unit
LE839A33MERV 13FiberglassFurnace
LE974C22MERV 8FiberglassHeat Pump
LE283Z90MERV 13PleatedFurnace
LE138Z21MERV 8HEPAAir Handler
LE312C15MERV 13HEPAHeat Pump
LE608X84MERV 11PleatedHeat Pump
LE590C49MERV 13FiberglassPackaged Unit
LE208X95MERV 11FiberglassAir Handler
LE155B77MERV 8PleatedHeat Pump
LE721A10MERV 11HEPAHeat Pump
LE955X92MERV 8FiberglassAir Handler
LE599B21MERV 11PleatedHeat Pump
LE488B34MERV 13PleatedPackaged Unit
LE137A45MERV 13HEPAHeat Pump
LE664X85MERV 13FiberglassPackaged Unit
LE589B74MERV 8HEPAFurnace
LE508X21MERV 11HEPAPackaged Unit
LE134A69MERV 11PleatedAir Handler
LE388C69MERV 13PleatedAir Handler
LE905X38MERV 8FiberglassPackaged Unit
LE919A76MERV 13PleatedPackaged Unit
LE105C92MERV 11PleatedAir Handler
LE584X33MERV 11HEPAPackaged Unit
LE867A66MERV 13FiberglassPackaged Unit
LE417C99MERV 13FiberglassFurnace
LE570A66MERV 13HEPAPackaged Unit
LE883A46MERV 11HEPAAir Handler
LE503C42MERV 11FiberglassHeat Pump
LE969B43MERV 11FiberglassAir Handler
LE723B96MERV 11PleatedHeat Pump
LE633B70MERV 13HEPAPackaged Unit
LE183A18MERV 13HEPAPackaged Unit
LE463B92MERV 11PleatedHeat Pump
LE385A49MERV 8HEPAHeat Pump
LE189C15MERV 13PleatedFurnace
LE240A50MERV 11HEPAAir Handler
LE848Z77MERV 11PleatedHeat Pump
LE712C85MERV 8PleatedAir Handler
LE843A18MERV 8HEPAAir Handler
LE811B19MERV 8HEPAAir Handler
LE603C94MERV 13PleatedAir Handler
LE913C81MERV 11HEPAHeat Pump
LE222C29MERV 8PleatedAir Handler
LE361C30MERV 13FiberglassFurnace
LE276Z20MERV 8FiberglassFurnace
LE669B84MERV 13FiberglassHeat Pump
LE962C34MERV 11HEPAHeat Pump
LE260Z52MERV 13HEPAHeat Pump
LE799Z86MERV 13HEPAHeat Pump
LE194C62MERV 13FiberglassHeat Pump
LE385Z46MERV 13HEPAHeat Pump
LE451X96MERV 13PleatedHeat Pump
LE843X88MERV 13HEPAPackaged Unit
LE977Z93MERV 11PleatedHeat Pump
LE631X63MERV 13HEPAAir Handler
LE408C77MERV 11PleatedHeat Pump
LE889A40MERV 13FiberglassPackaged Unit
LE833Z20MERV 8FiberglassFurnace
LE420X25MERV 13PleatedAir Handler
LE317Z74MERV 13HEPAFurnace
LE771C98MERV 8HEPAPackaged Unit
LE404A95MERV 11FiberglassAir Handler
LE173C52MERV 13FiberglassHeat Pump
LE367Z50MERV 8HEPAFurnace
LE895X67MERV 11PleatedPackaged Unit
LE653B74MERV 11HEPAPackaged Unit
LE617B70MERV 11PleatedAir Handler
LE804A63MERV 11HEPAAir Handler
LE886Z32MERV 11FiberglassFurnace
LE720Z51MERV 8PleatedPackaged Unit
LE614X92MERV 11PleatedAir Handler
LE453Z61MERV 8FiberglassHeat Pump
LE141C25MERV 8FiberglassAir Handler
LE176Z56MERV 11PleatedPackaged Unit
LE831C51MERV 8PleatedFurnace
LE192X11MERV 8FiberglassHeat Pump
LE108C56MERV 11FiberglassFurnace
LE850X27MERV 8HEPAAir Handler
LE875Z38MERV 13PleatedAir Handler
LE406A23MERV 13PleatedPackaged Unit
LE312B27MERV 11PleatedAir Handler
LE859X54MERV 11PleatedFurnace
LE767A57MERV 11FiberglassFurnace
LE136A31MERV 13PleatedAir Handler
LE987A28MERV 8HEPAAir Handler
LE764A74MERV 8HEPAPackaged Unit
LE616Z80MERV 11HEPAHeat Pump
LE257Z22MERV 13HEPAFurnace
LE917X67MERV 8PleatedAir Handler
LE670Z89MERV 8HEPAHeat Pump
LE458Z67MERV 8HEPAFurnace
LE545B47MERV 13FiberglassAir Handler
LE913B52MERV 8PleatedPackaged Unit
LE709C93MERV 8HEPAHeat Pump
LE801Z83MERV 8HEPAHeat Pump
LE768Z52MERV 13PleatedFurnace
LE130Z85MERV 13HEPAHeat Pump
LE202C60MERV 8PleatedFurnace
LE576X41MERV 8PleatedAir Handler
LE239A16MERV 13PleatedPackaged Unit
LE708X52MERV 8FiberglassFurnace
LE723C82MERV 13HEPAHeat Pump
LE988A45MERV 13FiberglassHeat Pump
LE401A30MERV 8FiberglassPackaged Unit
LE526X24MERV 11PleatedAir Handler
LE631X16MERV 13PleatedPackaged Unit
LE539A53MERV 11HEPAPackaged Unit
LE253B39MERV 8FiberglassAir Handler
LE680Z59MERV 11FiberglassFurnace
LE359B94MERV 13PleatedHeat Pump
LE260Z67MERV 13HEPAPackaged Unit
LE725Z59MERV 11PleatedFurnace
LE625B16MERV 8FiberglassPackaged Unit
LE678X20MERV 13HEPAHeat Pump
LE735X30MERV 11FiberglassHeat Pump
LE444X23MERV 11PleatedPackaged Unit
LE923A80MERV 11HEPAHeat Pump
LE918X57MERV 13FiberglassFurnace
LE439B10MERV 11PleatedAir Handler
LE509X38MERV 11FiberglassHeat Pump
LE960B73MERV 11PleatedHeat Pump
LE395B47MERV 8FiberglassHeat Pump
LE350Z75MERV 13PleatedAir Handler
LE979Z65MERV 11FiberglassAir Handler
LE254X50MERV 13HEPAHeat Pump
LE241A91MERV 11FiberglassFurnace
LE517X66MERV 13FiberglassFurnace
LE322A60MERV 11PleatedFurnace
LE524C70MERV 13HEPAFurnace
LE930C70MERV 11FiberglassAir Handler
LE129A92MERV 8FiberglassAir Handler
LE418A89MERV 13HEPAFurnace
LE613Z12MERV 8PleatedFurnace
LE736X80MERV 11PleatedFurnace
LE693Z83MERV 13HEPAFurnace
LE295C90MERV 8FiberglassFurnace
LE480A88MERV 8FiberglassAir Handler
LE252C20MERV 13HEPAAir Handler
LE684Z37MERV 8HEPAAir Handler
LE352Z83MERV 13FiberglassHeat Pump
LE134B45MERV 11HEPAAir Handler
LE746B55MERV 8FiberglassAir Handler
LE900A85MERV 11FiberglassHeat Pump
LE243A71MERV 13HEPAAir Handler
LE755Z71MERV 8FiberglassHeat Pump
LE420Z74MERV 8PleatedAir Handler
LE783X42MERV 11PleatedHeat Pump
LE685Z85MERV 8HEPAFurnace
LE927B62MERV 8HEPAAir Handler
LE808Z81MERV 11HEPAHeat Pump
LE910C49MERV 11HEPAPackaged Unit
LE443A15MERV 13PleatedHeat Pump
LE275B36MERV 8PleatedPackaged Unit
LE664C50MERV 8HEPAAir Handler
LE912X18MERV 13HEPAAir Handler
LE412X45MERV 11PleatedAir Handler
LE663Z96MERV 11FiberglassHeat Pump
LE422B59MERV 11PleatedHeat Pump
LE963C83MERV 8PleatedAir Handler
LE600X26MERV 8PleatedAir Handler
LE711X53MERV 11HEPAPackaged Unit
LE395B61MERV 8HEPAPackaged Unit
LE290Z75MERV 8PleatedAir Handler
LE287A58MERV 13HEPAAir Handler
LE432A67MERV 13FiberglassPackaged Unit
LE994Z70MERV 11PleatedAir Handler
LE378C13MERV 13FiberglassAir Handler
LE447C79MERV 8FiberglassAir Handler
LE479Z79MERV 13FiberglassPackaged Unit
LE370A34MERV 8HEPAHeat Pump
LE875Z20MERV 11HEPAAir Handler
LE958B93MERV 11PleatedHeat Pump
LE544C70MERV 11PleatedPackaged Unit
LE962X43MERV 11PleatedHeat Pump
LE300A26MERV 13HEPAAir Handler
LE262Z37MERV 8FiberglassPackaged Unit
LE165Z68MERV 13FiberglassFurnace
LE535Z78MERV 8HEPAHeat Pump
LE298A63MERV 11PleatedAir Handler
LE574B19MERV 13FiberglassAir Handler
LE737X35MERV 11HEPAAir Handler
LE935C47MERV 8PleatedFurnace
LE281Z99MERV 11HEPAAir Handler
LE697X85MERV 11PleatedFurnace
LE293A47MERV 11HEPAPackaged Unit
LE344Z85MERV 13HEPAAir Handler
LE615C32MERV 11PleatedHeat Pump
LE148C79MERV 8HEPAAir Handler
LE620B46MERV 11PleatedPackaged Unit
LE184A86MERV 8HEPAHeat Pump
LE323A69MERV 11FiberglassHeat Pump
LE243B48MERV 8HEPAPackaged Unit
LE744C85MERV 13PleatedHeat Pump
LE260A10MERV 11HEPAFurnace
LE837A61MERV 8PleatedAir Handler
LE748C41MERV 11PleatedHeat Pump
LE633A87MERV 13FiberglassFurnace
LE467A59MERV 13HEPAPackaged Unit
LE765C44MERV 13FiberglassFurnace
LE214X24MERV 13FiberglassAir Handler
LE596B49MERV 13PleatedPackaged Unit
LE838B13MERV 11PleatedPackaged Unit
LE192B25MERV 13FiberglassPackaged Unit
LE290Z40MERV 13PleatedHeat Pump
LE417A98MERV 13HEPAPackaged Unit
LE722A57MERV 11PleatedHeat Pump
LE825A86MERV 8HEPAFurnace
LE390B48MERV 8PleatedFurnace
LE368B65MERV 11HEPAAir Handler
LE361X79MERV 13HEPAHeat Pump
LE585X84MERV 8PleatedFurnace
LE644C21MERV 13PleatedHeat Pump
LE407A55MERV 11HEPAFurnace
LE121A55MERV 11FiberglassFurnace
LE687B11MERV 8HEPAPackaged Unit
LE524B42MERV 8PleatedPackaged Unit
LE681A67MERV 13FiberglassHeat Pump
LE545C89MERV 8PleatedPackaged Unit
LE551B89MERV 8HEPAAir Handler
LE894X95MERV 13HEPAPackaged Unit
LE183B37MERV 11HEPAFurnace

How to Confirm Your Filter Size

The nominal size (20x20x4) is the labeled size. The actual measured dimension is 19.5 x 19.5 x 3.75. Always check the label on your existing filter or measure the slot before ordering replacements.

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