Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
A sash is the part of the window or door that contains the glass.What does “fusion-welded” mean? Fusion-welding is the process of joining materials by melting them together with extreme heat, resulting in the materials bonding into one piece. All Thermal Industries vinyl replacement windows feature fusion-welded frames and sashes.
