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6MIL Greenhouse Woven Film
Place the cover on top of your 6 inch cube and instantly block light allowing roots to flourish and prevent algae
Accurate dual-beam CO2 sensor
The pH sensor in the probe is a single junction electrode with gelled electrolyte and a retractable cloth junction
16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 8 Air Filters 1 Pack Tubing 6MIL Greenhouse Woven FilmImportant 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,
