Pella 150 Series, OX configuration (one fixed, one venting panel). Measures 38.25" wide x 39" high. White vinyl frame with annealed glass, Advanced Low-E coating, high-altitude argon gas fill, solar heat gain coefficient of 0.30, and visible transmittance of 0.57 for a bright yet energy-efficient installation. Screen is included but has a small hole — see photos. All other components are in like-new condition. Ideal for Colorado's high-altitude climate.