About us

30 Years Of Quality

The Vanguard Fenestration line of injection molded window and door hardware products is a division of KASO Plastics, a full-service custom thermoplastic injection molder in Vancouver, Washington, United States. Utilizing state-of-the-art equipment and highly skilled staff, KASO Plastics offers high quality, close-tolerance products manufactured at globally competitive prices. Whether you're looking for high-quality parts right off the shelf, or are ready to revisit and make improvements to your own product lines with a new custom solution, KASO Vanguard's expert engineering and manufacturing services are ready to help you meet your requirements.

Based out of KASO’s modern manufacturing facility, Vanguard products are in high demand across North America as a result of our high quality and excellent value. We have experience working with manufacturers of all sizes to provide ready-made products and develop new products for specific applications.

Contact KASO today to learn more about Vanguard products or for more information about teaming up with KASO's engineering resources.