Manufactured from De-zinc brass tubing designed for central heating or hot water circulating systems. Available in 660 BTUs/hr. Also available in several finishes: Chrome, Nickel, Satin Nickel, Regal Brass, Satin Brass, Gold, Satin Gold, Baked epoxy powdercoat white finish or custom colors, combination finishes are also available. Matching cross-handle valves and sleeve kit included.