20x30x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 6 Pack spl_hw Sunflowers

Sunflowers

which work in harmony with the soil to promote flowering and fruit production

Use on any food or non-food crop up to day of harvest

Tomatoes - Preventative: 1-3 P

This beneficial relationship improves nutrient uptake

20x30x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 6 Pack spl_hw SunflowersNordic Pure Half Inch Ring Panel AC Furnace Air Filters consist of an internal frame bonded between flat layers of two different types of electrostatically charged HVAC furnace filter media. The first layer is a high capacity, polyester filter material which acts as a pre filter, capturing large airborne particles. The second, more efficient, layer is a MERV rated smooth poly blend filter material. The electrostatic charge works as a magnet to draw in