Series 700 double hung windows are a winning combination of classic design, superior materials and energy-saving technology — from a proven industry leader.
At the heart of each Series 700 Double Hung Window is our special polymer thermal barrier. This special barrier separates the interior and exterior of the window throughout the entire frame and sash, dramatically reducing heat loss in the winter and heat gain in the summer.
In addition to the features shown in the cutaway view, the Series 700 Double Hung includes:
Our Thermal Barrier aluminum windows and sliding glass doors feature a durable, maintenance-free powder coat finish in your choice of five Standard colors (below, left). Custom colors and anodized finishes (below, right) are available for an additional charge*.