18x24x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack Reflective & Greenhouse Films • Replaceable

• Replaceable

Light Source: LED

Magnesium is an essential mineral used in the process of producing chlorophyll

it provides a higher level of drainage and air-filled pore space than 25% perlite

QUANTUM PAR METER

18x24x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack Reflective & Greenhouse Films • ReplaceableNordic 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