20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter 1 Pack Master Controller HANNA's exclusive cartridge pH and

HANNA's exclusive cartridge pH and ORP electrode

Durable flame-retardant polypropylene construction that can be painted

EZ-CLONE is proud to introduce the brand new 16 and 32 Site Low Pro Systems

they won’t release any additional minerals into your plant's nutrient stream

And to give your plants the very best they deserve

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter 1 Pack Master Controller HANNA's exclusive cartridge pH andImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. We also carry 4 7 8 and 5 1 4 inch depth filters,