Lower window allows for ventilation in multiple positions. 

• White.
• Includes a tempered glass with frame that measures 22 1/8" wide by 27 1/16" tall.
• Fits doors 1" thick, 32" and 30" wide or custom rough opening widths of 29 3/4" – 33 3/4"  and heights 75" - 84 7/8".
• Instructions included.