12x20x1 Pleated Air Filters MERV 14 Plus Carbon 6 Pack plant-care/pest-&-disease-control The sap groove prevents the

The sap groove prevents the blade sticking when cutting "sappy" wood

It tells you how good the carbon is

Includes two RO membranes (HL22045)

Dual use (submersed and inline)

12x20x1 Pleated Air Filters MERV 14 Plus Carbon 6 Pack plant-care/pest-&-disease-control The sap groove prevents theNordic Pure 12x20x1 MERV 14 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home. It will help eliminate unwanted odors as well as trap most airborne dust and particulate matter for fresh, clean air. Odorous gases and vapors (VOC) are attracted to and held by the activated carbon material while