Observation monitoring well manhole cover
Octagonal, structural frame member
Octahedron truss assembly
Oil spill barricade
Oil spill barricade
One piece plastic extrusion having a co-extruded foam core...
One tier gazebo
One-piece dome ceiling with lip
Open canopy roof
Open shed attachment
Opposed tower cable stay supported roof structure
Ornamental enclosure
Ornamental frame for garage doors
Outdoor enclosure
Outdoor screen
Outdoor shelter
Outdoor shelter
Outdoor stage roof
Overhead door
Overhead door