16x16x1 Furnace Air Filters MERV 10 Pleated Plus Carbon 24 Pack Growing Accessories Leaf Green is recommended for

Leaf Green is recommended for plants that have difficulties during their initial development

The yields speak for themselves — we're not going back

Includes mounting brackets

• Simple 1 button calibration for pH 7 and pH 4

AO 36/40 plugs fit well into the hole sizes provided by the blocks

16x16x1 Furnace Air Filters MERV 10 Pleated Plus Carbon 24 Pack Growing Accessories Leaf Green is recommended forNordic Pure 16x16x1 MERV 10 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