The Thermo Panel III uses dual panel tempered glass to make the door superior to other models on the market. Using multiple panels of glass will better insulate and help prevent the home from being impacted by nature. Since it does this effectively it cuts down on cooling costs in summer and heating costs in winter.
This door also uses the Endura Flap which is a high quality, environmentally safe, and long lasting. To find out more about how great the Endura Flap is