CleanFiber (formerly Ultracell Insulation) is a company that specializes in producing high-performance cellulose insulation from recycled corrugated cardboard boxes and other clean sources of high-quality fiber. Founded by veteran cellulose installers in Maine, CleanFiber addresses the industry's declining supplies of old newsprint by offering a product with lower dust, lower contamination, and better coverage than competitors. Their patented process embeds fire retardants in the insulation, delivering a superior product at a cost-competitive price. The company's state-of-the-art production facility in Buffalo produces 3 million bags annually, allowing them to offer an all-borate product at extremely competitive pricing.