20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 2 Pack ac-/-dehumidification-/-humidification S4 Spectrum: Provides highly efficient

S4 Spectrum: Provides highly efficient full spectrum with a healthy red-to-blue ratio to drive photosynthesis

There is no limit to the number of times that BotaniGard 22WP can be applied in a season

This easy-to-mount unit has 3 speed settings and oscillates 90 degrees to give you ultimate control of air flow in your area

• Flexible cable fits any growing area

Screwdriver

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 2 Pack ac-/-dehumidification-/-humidification S4 Spectrum: Provides highly efficientImportant 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,