Valterra L32CS3208 Stainless Steel Double Cylinder Deadbolt - 5/8" Throw. Since 1981, Valterra Products, LLC, has been a leading supplier of brand name product lines to the RV, Pool & Spa, and Plumbing industries. Valterra’s Contract Manufacturing Division offers low-cost custom manufacturing and assembly services to client companies seeking to reduce costs and improve the bottom line.