Welcome to US Polymers
US Polymers is California corporation and a member of the Harwal Group. Established in 1983, USP has four divisions including Building materials, Custom profiles, Storage buildings and Window Shutters. The international resources with years of experience and trained staff allow USP to need all your extrusion needs.
Who We Are
Since 1983, US Polymers has been serving industries with vinyl building materials and home improvement products
Our mission has always been to provide innovative and high quality products and excellent customer service
US Polymers Divisions
DuraMax makes outdoor vinyl fencing, patio covers and decking products designed to help you make the most of that wonderful place you call home. Specially engineered to withstand the rigors of the Southwest sun, Duramax is known for its high quality and durability.
DuraMax storage solutions offer a wide range of durable sheds, garages, greenhouses and other products come in a wide variety of sizes and colors to provide the perfect storage solution for your backyard.
Optimize your custom profiles with design engineering. Our large staff of inhouse engineers, will optimize your ideas with the perfect product design that reduce costs and maximizes function.
With over 25 years of experience designing and fabricating custom-made shutters, ShutterSMART is North America's leading shutter manufacturer known for making quality affordable shutters quickly and conveniently. Shutters provide not only timeless elegance but also the highest rated energy efficiency of any window covering, providing a green solution that reduces cooling and heating costs