Thermoseal® Industries knows glass and we know doors. Since 1956 we have produced in excess of 10 million Insulating Glass (IG) Units to the commercial refrigeration, oven, test laboratory, and architectural markets. We offer a wide range of glass products consisting of insulating glass units for commercial applications, refrigerator doors, heated and high temperature glass units for specialty cases, viewports, windows, glass and mirrors! Themoseal® offers complete design services. As a custom manufacturer, we can accommodate most customer requests, so don’t hesitate to call us with a special request.