11 1/4x19 1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 12 Pack light greenhouse planting and hydroponics etc

greenhouse planting and hydroponics etc

Trim up to 8 pounds an hour quietly and efficiently

The HI12943 is a pH electrode for the direct measurement of pH in soil and soilless media

Optimal trimming speed is 35 RPM

Apply once

11 1/4x19 1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 12 Pack light greenhouse planting and hydroponics etcNordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.