Uponor PEX (cross-linked polyethylene) pipe is available in 2 1/2- and 3-inch sizes and includes Wirsbo hePEX oxygen-barrier pipe for hydronic heating and cooling applications. It is available in various coil lengths and straight lengths to meet any hydronic heating application. The pipe is designed to be a highly durable, cost-effective option for transporting water to HVAC terminal units, such as chilled beams and fan coils. 800/321-4739; www.uponor-usa.com.