corridor is part of: corridor contains: Full expansion for corridor: 100% 2x3x6 Convex Corridor Side 100% 2x3x6 Convex Corridor Side w/ 5 Bars 100% 3x3x3 Convex Corridor Corner Top 100% 3x3x6 Convex Corridor Corner 100% 4x4x6 Concave Corridor Corner