One of the most refreshing of window designs is the Horizontal Slider. Both sashes (sometimes called a vent) slide independently allowing for maximum ventilation.
Horizontal Sliders come in the "2 Lite" and "3 Lite" varieties. In a 2-Lite (2 section) slider...each sash slides. In a 3-Lite Slider, the sashes on either end both slide while the center panel is stationary.
Proud Seller of American Made Windows