Oak textured contoured panel
Observation chair
Observation monitoring well manhole cover
Octagon post cap
Octagon tile module
Octagonal building
Octagonal, structural frame member
Octahedral residential structure
Octahedron truss assembly
Octopost extrusion
Office building
Office workspace
Office workspace with shared corridor
Offset block
Offset block
Offset support block with flat face
Offshore building or the like
Oil lamp
Oil spill barricade
Oil spill barricade