16x20x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 15 Plus Carbon 2 Pack DUCTWORK • Accurate heating within 1

• Accurate heating within 1 degree

weight and density of flowers and fruits

NOTE: Grow1 sensors DO NOT WORK with GROW1 weather stations

Sap Off Soap works quickly to cut resins

The Ideal-Air Supreme Silver/Black Flex Ducting is a high-quality

16x20x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 15 Plus Carbon 2 Pack DUCTWORK • Accurate heating within 1Important 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,