Customer had stone masonry and metal cabinetry installed before multiple grills installed. Ran three-quarter inch black iron through masonry and split into two 1/2 inch lines for separate grills. Stubbed up from base with 18 inch. 1/2 black iron nipples. Cap both lines and tested every joint for leaks. Sediment trap, and union installed on exterior just after shut off valve for service ability in future. Left customer with multiple yellow pigtails for easy connecting for installer.