20 ft. Danube - Garage Door Window Set Premier P-10-GDW-DAN-20FT-10x1PIECE Overview: Elevate the appearance of your garage with the 20 ft. Danube Garage Door Window Set. This premier window set, model P-10-GDW-DAN-20FT-10x1PIECE, adds a touch of sophistication and style to your garage door. Features..