This Pella 150 Series single-hung window (one wide) measures 47.5" x 83.5" rough opening (48" x 84" nominal) and features a clean white vinyl frame. Equipped with Advanced Low-E annealed glass with argon gas fill, specifically optimized for high altitude performance — ideal for Denver-area installations. NFRC certified energy performance ratings: U-Factor 0.29, Solar Heat Gain Coefficient 0.30, Visible Transmittance 0.56. Includes window screen. Never installed, in new condition. Local pickup strongly recommended due to size and weight.