16x24x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 1 Pack HPS and plant uptake

and plant uptake

it leaves no residue behind and tests clean parts per billion

they can be slow to establish - 4-8 weeks under ideal conditions - meaning they are best used for prevention and low-level management of thrips infestations

This replacement cartridge is to be used in conjunction with The Road Kit - 320 ITEM NETRK320

This kit contains 4" flanges that will allow you to set  up air-cooling of two Powerhouse ballasts or a Daystar DAUN reflector

16x24x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 1 Pack HPS and plant uptakeNordic Pure 16x24x4 MERV 12 Pleated 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