16x16x2 Furnace Air Filters MERV 12 Pleated Plus Carbon 3 Pack PH/EC/TDS Meters and Solutions 9V battery as well as

9V battery as well as a protective carrying case

Labelled for a wide variety of crops

This also eliminates raw edges that may generate unwanted particulates

Since 1991 the #1 additive for hydroponics and soil gardeners world wide

16x16x2 Furnace Air Filters MERV 12 Pleated Plus Carbon 3 Pack PH/EC/TDS Meters and Solutions 9V battery as well asNordic Pure 16x16x2 MERV 12 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer. This results in less flow restriction and 33% more surface area for cleaner smelling air. 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