American-Made Monolithics, Backed by North American Reach

Dec 17, 2025 / Fulton, Manufacturing, Products

HWI’s lightweight monolithics are proudly manufactured in the United States and supported by an extensive network of distribution centers across North America. Through a robust and actively managed stocking program, products are positioned close to where customers need them—providing local access, faster delivery times, and the reliability that comes from consistent, high-quality materials.

This integrated production and distribution approach is further strengthened by HWI’s newest lightweight monolithic manufacturing facility in Fulton, MO, which provides direct access to high-quality local clay reserves. This strategic advantage enables increased production of HWI’s GREENLITE aggregate-containing materials, including the GREENLITE®-45-L family of monolithics and GREENLITE® 115 AR brick. Together, these capabilities allow HWI to respond quickly to customer demands while maintaining the performance standards our partners depend on.

Check out our Fulton LW monolithic page for more information, or click here for more on our extensive DC network, or to find the location nearest you.

About HWI, A member of Calderys

HWI is one of the leading suppliers of refractory products and services in the United States, with a history that spans 160 years. It is part of Calderys and is the brand for the Americas region of the Group. HWI operates an extensive network of manufacturing sites and distribution centers across the Americas, along with the largest refractory industry research facility in North America. Serving virtually every major industry that requires refractory solutions to enhance production and protect assets, HWI is consistently recognized for its talented experts, industry firsts, and intensely driven excellence.

For more information, visit https://thinkhwi.com