16x30x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack led from our standard Electropolish (stainless

from our standard Electropolish (stainless steel) to Quantanium Coated

Azomite replenishes these essential trace minerals through a 100% naturally derived source

Reinforced plastic corners for higher durability

Bio·Heaven™improves the effects of all foliar sprays and fertilizers used to feed the plant

favored by thousands of horticulturists—but with the added feature of curved blade tips

16x30x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack led from our standard Electropolish (stainlessNordic 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