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

This Product Controls These Pests or Diseases: Shore flies

always confirm compatibility with a jar test and apply to a small section of the crop before mixing and applying large volumes

The modulating control will vary the Modulating Steam Humidifier’s output based on the difference between the set point and actual RH

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,