The 28x30x2 Geothermal pleated furnace filter is built with "Micro Allergy" pleated filters that take filtration to the next level.
They utilize state-of-the-art "shaped fiber" media technology to provide high performance filtration with low pressure drop for energy efficiency. The "Micro-Allergy" offers significantly higher particulate removal efficiency than regular pleated filters and achieves a MERV-11 rating. The 28x30x2 Geothermal pleated furnace filters are comparable to 3M Filtrete Micro Allergen filters at a significant cost savings.