For over 30 years, Thermal Windows, Inc. has been Oklahoma's source for quality window design and production. We manufacture energy-efficient aluminum and vinyl windows, sliding glass doors and terrace doors. Many of our products meet Energy Star performance levels. Founded by Bob G. Pool in December, 1979, the company has grown steadily over the past three decades. Annual sales are now $20 to $30 million. Sales and manufacturing operations in Tulsa, Oklahoma occupy 235,000 sq.ft. Thermal has 150 employees, and ships its products throughout the USA. There are company showrooms in Tulsa and Oklahoma City, as well as dealers in nearly every state.