16x20x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 12 Pack double-ended The HumTea Brewball allows gardeners

The HumTea Brewball allows gardeners to avoid purchasing large

It saves a lot of expenses at exhaust

Extend the growing season to 365 days a year with Eye HortiluxTM grow lamps

Simple assembly in minutes

16x20x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 12 Pack double-ended The HumTea Brewball allows gardenersNordic 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