20x30x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack lighting-systems/kits Smart digital controller with temperature

Smart digital controller with temperature and humidity trigger programming

• LCD touch-type screen with auto backlighting

It increases and stabilizes chlorophyll in plants

6 cm / 16"

【Coverage Area】Perfect for 5’x4’ vegetative coverage at 28” and 5’x3’ flowering coverage at 24” height

20x30x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack lighting-systems/kits Smart digital controller with temperatureNordic 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