20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 1 Pack environmental-controllers Also features a 25' grounded

Also features a 25' grounded cord

Accurate dual-beam CO2 sensor

parasites and diseases in organic and conventional crops

Can Sluggo be used in certified organic production

B'Cuzz Bio-NRG Growth-C hydroponic nutrient is suited for all stages of development in conjunction with B'Cuzz Root and Bloom Stimulators as well as Bio-NRG Flavor and Growth-C

20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 1 Pack environmental-controllers Also features a 25' groundedImportant 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,