With over 50 years experience as a vinyl window manufacturer, Thermal Windows & Doors has developed high quality, ENERGY STAR qualified Vinyl Replacement products. Using modern technologies, including fusion-welding techniques, the frame and sash components of new construction and replacement windows. Each replacement window is manufactured by Thermal Industries in custom-sizes to specific window openings in your home for quick installation and the perfect fit.

Basement windows, also called hopper windows, are vinyl replacement windows that are bottom-hinged and open inward for ventilation. For added safety and security, consider replacing low-to-the-ground windows with basement vinyl replacement windows featuring shatter-resistant Exolite. View Brochure
Common application over kitchen sinks or living rooms. Customize this style, you can choose from standard birch veneer hardwood head and seat board, choose oak or paint to match your interior colors. Solid vinyl, fusion-welded construction. Screened casement window with vents. Laminated, safety glass roof.


This manufacturer has the largest selection of individual glass blocks in the entire Midwest. To create their glass block styles, Imperial fastens them together, and inserts into a frame for a unique, custom look. Used to give it a special look and to maintain privacy, in bathrooms, stairwells, basements or around entry doors. So strong they’re not easily broken, making them a great deterrent to break-ins.