Roomside Low-E Glass: i89
Introducing LoE-i89, our new energy-saving 4th surface coated glass. It offers more light transmittance and less reflectance than LoE-i81. And it’s now available in annealed making it less expensive. Yet it still delivers a center of glass U-factor of just 0.20 when coupled with our LoE or LoE glass and argon fill in a double-pane unit.