16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 2 Pack food-&-water-storage Type of Test: Hydroponic Fertilizer

Type of Test: Hydroponic Fertilizer Analysis

Always check a small sample of water

– Includes all necessary hardware and detailed instructions for easy installation and operation

This Product Controls These Pests or Diseases: Shore flies

Total micronutrient complex

16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 2 Pack food-&-water-storage Type of Test: Hydroponic FertilizerImportant 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,