WinDor Systems | 3750 5 Door Folding Door System, Black Exterior and Black Interior, high performance glass, argon filled, black hardware, and no grids. Door dimensions are approx 12' wide by 8' high. Exact dimensions should be confirmed with us if interested. Handle: Sentry Classic Straight Black. This door system is in pristine condition and is brand new, never opened, delivered to us directly by the manufacturer. It was not usable due to a change in framing in a custom home project.