FAQ Knowledge Articles

Ultrex is made by taking thin strands of strong glass cables and saturating them with specifically-compounded resins. This material innovation was developed by Marvin and brings 20 years of unmatched experience, tooling, and component optimization to every Integrity and Infinity product.  We use Ultrex and our proprietary pultrusion process to manufacture high-demand windows and doors that endure all elements without showing age or wear.