16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 1 Pack Grow Strong Humboldt Nutrients Natural Two-Part Basic

Humboldt Nutrients Natural Two-Part Basic Starter Kit includes the key natural products that gardeners who demand only the most natural elements expect

SolarStorm T8 15W 18" Replacement UVB bulb

Use Aphidius colemani as a preventative or active control measure

or cucumbers

total 500 bags/case

16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 1 Pack Grow Strong Humboldt Nutrients Natural Two-Part BasicImportant 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,