Replacement filters for Mitsubishi PLA Series units. Our Mitsubishi filters are manufactured here in the USA under the strictest quality standards, using premium quality MERV 11 microglass filter media. Colorimetric efficiency meets or exceeds the 65% standard. We are very proud of this product. Air flow, filtration efficiency, and filter life are guaranteed to meet or exceed your current filter. Please give us a call to discuss bulk shipments and quantity discounts.