20x24x1 Furnace Air Filters MERV 8 Pleated Plus Carbon 24 Pack Reflective & Greenhouse Films Optimal humidity is 50% or

Optimal humidity is 50% or greater

slime and algae

and feature two universal sockets

full-size dimensions and volume to provide maximum growing area

Standard 2-way electric normally closed valve

20x24x1 Furnace Air Filters MERV 8 Pleated Plus Carbon 24 Pack Reflective & Greenhouse Films Optimal humidity is 50% orNordic Pure 20x24x1 MERV 8 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