20x27x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack environmental-controllers They combine premium grade specular

They combine premium grade specular aluminum with energy-efficient/high-output T5 tubes and put out double the light energy of normal fluorescent systems

These filters also feature superior two-stage air filtration design: air is filtered once as it enters the filter

and the locking hook keeps the blade closed when not in use

and herbs will receive adequate nutrition during the vegetative and flowering stages

Tolerates high daytime temperatures and low nighttime temperatures

20x27x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack environmental-controllers They combine premium grade specularNordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.