14x20x1 Pleated MERV 13 Air Filters 12 Pack shoe-cover pH Accuracy: ±0

pH Accuracy: ±0

Pollen extractor machine

Specialized electrode for spot checking the pH of soil and soil slurries

The Autopilot Cooling Thermostat is a compact and easy-to-use controller for air conditioners and exhaust fans

The compressed blocks once hydrated fill the fabric pot and becomes a ready-to-use cube

14x20x1 Pleated MERV 13 Air Filters 12 Pack shoe-cover pH Accuracy: ±0Nordic Pure MERV 13 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200