20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 10 Air Filters 1 Pack Water Pumps & Irrigation Supplies It can also be used

It can also be used as a soak for bulbs to increase their vigor and rooting time

Boot covers provide protection from liquids and particulates

Periodic flushes with Big Time Rinse will remove excess nutrient salts and safely leach them from your crops media

The COM-100 is a professional level EC/TDS meter at an unbeatable price

To re-stock your pH & conductivity probe care kit

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 10 Air Filters 1 Pack Water Pumps & Irrigation Supplies It can also be usedImportant 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,