12x24x4 (3 5/8) Pleated MERV 7 Air Filters 6 Pack books-&-videos the 120mm fan is IP-44

the 120mm fan is IP-44 rated to be highly resistant to liquids and dust particles

Compared to the amperometric design of other conductivity probes

660W true power with high power efficiency

it will help correct mineral problems such as scaling

grease & oil

12x24x4 (3 5/8) Pleated MERV 7 Air Filters 6 Pack books-&-videos the 120mm fan is IP-44Nordic Pure 12x24x4 Pleated Air Filters MERV 7 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, bacteria, mold spores and other contaminants are removed. All Nordic Pure pleated air filters are manufactured using a heavy duty, moisture resistant beverage