The EcoTherm 200 is our most popular vinyl new construction window. The slimline frame and sash design allow for maximum viewing area, while our ST glazing package meets the latest, most rigorous Energy Star standards. It’s one of the most functional, most efficient vinyl slider windows on the planet.
|HP Low E||0.34||2.94||0.28||0.53|
|Supra Low E Argon||0.29||3.45||0.28||0.53|