Crystal 2000 Series Aluminum Double Hung Windows

+ Frame Depth = 3-1/4 Inch
+ Insulated Glass Unit Depth = 7/8~ for optimum insulation & sound reduction
+ PPG Intercept Insulated Glass Spacer ~ the warm-edge technology of choice
+ Tilt Sashes ~ for safe, easy cleaning of both top and bottom sashes
+ Sloped Sill
+ Anti-Drift Head Clip Lock ~ automatically secures the top sash in the closed position for safety, security, and a weathertight seal + Free Double Strength Glass