US Patent 7780509 Quick-install foundation vent

A foundation vent comprising a front frame and resiliently-flexible clips with tabs at their ends. The foundation vent can be quickly installed within a foundation opening by flexing the clips, placing them into the opening, and pushing the front frame until it seats against the exterior of a foundation wall. At this point, the tabs of the clips will have protruded past the interior face of the foundation wall allowing the clips to return to their unflexed state and causing the tabs to secure against the interior face of the foundation wall.