The Woodford 19CP-4 is a Model 19 Series freezeless wall faucet will not rupture when valve is shut off even when a hose remains connected and features an anti-siphon for backflow prevention with a 1/2" male thread or 1/2" female copper inlet and has a oval powder coated cast aluminum handle and includes an intergal backflow prevention device and uses an atmospheric vent and patented check to provide anti-siphon protection along with a resetting pressure relief valve. The Woodford 19CP-4 is intended for year round residental irrigation purposes and has a 4" rough-in or 5 1/4" mounting depth.