Rexair doesn't make a lot of things that go into their machine. No manufacturer does any longer. For example, the cord. They don't string copper wires into cords and mold plugs onto the ends. They purchase the cords from "suppliers". They have a HEPA filter supplier, a switch supplier, a dolly caster supplier, brush suppliers, and even motor suppliers (e series). They buy the hose from a supplier. That's just how it is. They don't make the fans for their motor or the bearings. Tons of stuff comes from suppliers.