50'x100'x12' Clear Span Metal Building includes (1) 8'x8' Garage Door Frameout and (13) Frameouts for walk-in doors & windows. The complete specifications of this 50x100 Metal Building are: Vertical Style Roof (1) 8'x8' Garage Door Frameout (3) 36"x80" Walk-in Door Frameouts (10) 36"x45" Window Frameouts Double legs & Double baserails