18x24x4 (3 5/8) Pleated MERV 15 Air Filters 6 Pack Nutrients and Supplements Comes in a heavy-duty

Comes in a heavy-duty

A remote sensor with detachable 16' cable allows close placement to the plant canopy

Though new to growers

TSH-1 can control EC fans etc

growing channels

18x24x4 (3 5/8) Pleated MERV 15 Air Filters 6 Pack Nutrients and Supplements Comes in a heavy-dutyNordic Pure 18x24x4 Pleated Air Filters MERV 15 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, smoke particles, smog, allergens, virus carriers, bacteria, mold spores and other contaminants are removed. All Nordic Pure pleated air filters are manufactured