https://www.arborvacuum.com/product/cv-hah-fittings-rough-in-kit-hs4000-hs3000/2724
Central Vacuum / Hide-A-Hose / Fittings / Rough In Kit / HS4000 & HS3000 | Arbor Vacuum
Hide-A-Hose HS3000 Valve Rough In Kit includes:backing platemud coverpipe fittingretainer bandmud cover screws
hide a hosecentral vacuum