Patent ID: 8622652

Claim:
A double door damper system for storm water conveyance structures, comprising: a first door having outer side edges slidable within first tracks in a first frame about a passage through a water conveyance opening, the first door having a length and width that is sized to substantially close off the passage through the conveyance opening, the first door having a first opening therethrough for defining a smaller passage than the passage through the water conveyance opening, at least one vertical bar member rotatable mounted to at the least one bar mount adjacent to at least one of the outer side edges of the first door; a plurality of spaced apart first moveable members along at least one vertical bar member for pushing the front door against an interior portion inside the first tracks, wherein rotating the vertical bar member rotates the first moveable members in a horizontal axis from a loose position where the first door is loosely seated in the first tracks to a closed position where the first door is pushed against the interior portion of the primary tracks, wherein the closed position prevents the water from passing about the outer sides edges of the first door, wherein the first moveable members lock the first door to different height positions in the first frame, the different height positions for adjusting size of the passage through the water conveyance opening; and a secondary door slidable within a second frame on the first door, the secondary door having a length and width that is sized to substantially close off the first opening in the first door.