LSP Products Group (LSP) was founded by plumbers over 40 years ago with a focus on unparalleled innovation, superior product quality, and best-in-class service to the plumbing industry. Since its beginning as Specialty Products TM , LSP has continued to lead plumbing products innovation. Their primary focus is the new construction market where they develop products that make installations easy and provide significant cost savings to the plumbing/mechanical contractor.