JELD-WEN Premium Atlantic Vinyl windows offer you the ease of maintenance and superior energy efficiency. Now with Premium Atlantic Vinyl windows, there are more choices than ever before, including architectural features that add to the aesthetic value of your home. A single hung window features clean lines for a streamlined look. This type of window has one stationary sash and one sash that glide vertically in grooves or tracks. The bottom sash tilts in for easy cleaning. Standard high-performance LowE insulating glass lowers energy costs, helps homes stay cooler in the summer and warmer in the winter.