R5 energy performance.
Now available in a double-glazed window unit.
Introducing U4 - 4th Surface Technology.The demand for affordable products that can reduce energy consumption
and lower utility costs is greater today than ever before. Revolutionary
U4 - 4th Surface Technology answers the challenge—providing superior
energy performance (up to R5) in a standard double-glazed unit.
U4 simply offers you more. Explore this site to discover how.
Homeowners
More savings for homeowners.
Did you know that heat loss through windows can account for up to 25% of your heating bill?* It’s not surprising when you consider that many double-glazed windows have only one Low-E coating to help prevent heat from escaping to the outside. But U4 - 4th Surface Technology adds a second Low-E coating to double-glazed windows, significantly enhancing their energy performance. Read more
Did you know that heat loss through windows can account for up to 25% of your heating bill?* It’s not surprising when you consider that many double-glazed windows have only one Low-E coating to help prevent heat from escaping to the outside. But U4 - 4th Surface Technology adds a second Low-E coating to double-glazed windows, significantly enhancing their energy performance. Read more
Manufacturers/Dealers
More flexibility for
manufacturers.
U4 - 4th Surface Technology allows you to utilize two Low-E coatings in a double-glazed IGU, delivering up to R5 (0.20) glass performance—the same level of performance as costlier triple-glazed units. U4's proven hard-coat technology allows for seamless integration into your current manufacturing process. Read more
manufacturers.
U4 - 4th Surface Technology allows you to utilize two Low-E coatings in a double-glazed IGU, delivering up to R5 (0.20) glass performance—the same level of performance as costlier triple-glazed units. U4's proven hard-coat technology allows for seamless integration into your current manufacturing process. Read more