Upper window allows for ventilation in multiple positions. 

• White.
• Includes a tempered glass with frame that measures 18 13/32" wide by 27 27/64" tall, prop rod and zip tie.
• Fits doors 1" thick, 29" x 80" or custom rough opening widths of 27 3/4" - 30 7/5" and heights 75 - 84 7/8"      .
• Instructions included.