16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 1 Pack hydro-x Airis 8: The Ultimate Dual-Function

Airis 8: The Ultimate Dual-Function Dab and Dip Pen

providing the full range of spectral energy required for all stages of plant growth and development

Powdery Mildew(Sphaerotheca macularis) and Root Rot (Pythium sp

• Patented Compost Tea System design

- Designed Specifically for the Horticulture Industry

16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 1 Pack hydro-x Airis 8: The Ultimate Dual-FunctionImportant 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,