20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 13 Plus Carbon 4 Pack grow-system/-trays/-reservoirs three-layer SMS fabric (Spunbond Meltblown

three-layer SMS fabric (Spunbond Meltblown Spunbond) protects against light liquid splashes and sprays and provides a superior particulate barrier

LTL Controls CO2 Generators come with everything you need to get your CO2 system started

-Maximum cfm: 580

The new and improved EZ-CLONE Classic Manifold is better than ever

Specifically designed for high-frequency electronic ballast

20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 13 Plus Carbon 4 Pack grow-system/-trays/-reservoirs three-layer SMS fabric (Spunbond MeltblownImportant 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,