The Woodford 19P-10 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" female thread or 3/4" male thread 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 19P-10 is intended for year round residental irrigation purposes and has a 10" rough-in or 11 3/8" mounting depth.