Manufacturer of Hundreds of sizes of Commercial and Residential AC Filters and Furnace Filters for use in HVAC Systems as wel ... l as Custom Filter Manufacture in sizes ranging from 5"x5" to 65"x65". Manufacturer of Air Purification systems, as well as ancillary products dealing with air purification and filtration. Manufacturer of automotive oil filtration systems for cars and trucks, tractors, fork lifts, backhoes and any machine needing an oil filter. Patented and unique systems. read more