This Sources Sought notice is not a solicitation; IHS is seeking Indian Small Business Economic Enterprises capable of supplying HVAC filters and filtration media under Buy Indian Act preference. Interested firms should provide a capability statement and the Buy Indian Act Indian Economic Enterprise Representation Form that directly demonstrate relevant experience, capacity, and ability to support preventive maintenance filter-change cycles plus specialized clinical and instrument-related filtration. Performance locations are Lawton Indian Hospital in Lawton, OK; Carnegie Indian Health Center in Carnegie, OK; and Anadarko Indian Health Center in Anadarko, OK. The applicable NAICS code is 333413 with a 500-employee small business size standard, and the PSC is 4460. ISBEEs and other small businesses are encouraged to respond with specific, non-generic capability information.