The Mainline collection offers a diverse selection of high-quality plumbing products, such as faucets, sinks, fittings, fasteners, supplies drains and more. Suitable for residential and commercial applications alike, Mainline's unparalleled collection has the durable, professional-grade plumbing products you need and the quality you demand. Be sure to check out our Where to Buy page to find an authorized Mainline sales outlet near you.