16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 1 Pack Grow Strong total 500 bags/case

total 500 bags/case

SolarStorm T8 15W 18" Replacement UVB bulb

Verify that your transformer is a Venture by checking the label before ordering this capacitor

Use Aphidius colemani as a preventative or active control measure

This is the optimal method to trigger and focus the cuttings response to form healthy

16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 1 Pack Grow Strong total 500 bags/caseImportant 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,