This Amsco white vinyl horizontal sliding window measures 71.5" wide x 47.5" high and is in like-new condition, still in its original box. It features double-pane glazing with Low-E coating and argon gas fill for superior insulation. The solar heat gain coefficient is 0.29 and visible transmittance is 0.54, making it a strong performer for Colorado climates. Configuration is fixed/vent with a left-hand operating sash (from inside) and includes a lock mechanism. Comes complete with the window unit and screen. Ideal for bedroom, living room, or utility applications requiring a large sliding window.