20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 13 Plus Carbon 4 Pack Pest and Disease Control The active ingredient in RootShield

The active ingredient in RootShield Granules is a patented fungus

Measures 31" x 31" x 12

Overall tool length measures 23

Electrode: Replaceable glass sensor and reference tube electrodes

000 Watt eFlex DE Growing System 25¼” x 10½” x 4¾” 15

20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 13 Plus Carbon 4 Pack Pest and Disease Control The active ingredient in RootShieldImportant 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,