20x24x4 (3 5/8) Pleated MERV 14 Air Filters 1 Pack PH/EC/TDS Meters and Solutions Insert grow tray

Insert grow tray

They contain Bacillus thuringiensis israelensis

Mild Vegetative Rate: 6 ml/gallon

Xx-Large - Case of 12 sleeves (12 units per sleeve)

The premium granules expand up to 7 times in volume when hydrated

20x24x4 (3 5/8) Pleated MERV 14 Air Filters 1 Pack PH/EC/TDS Meters and Solutions Insert grow trayNordic Pure 20x24x4 Pleated Air Filters MERV 14 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