Patent ID: 11939811
Assignee: ANDERSEN CORPORATION
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. An impact-resistant fenestration unit comprising:
a frame assembly comprising a sill, a head jamb, and two opposed side jambs, the frame assembly forming a first lower corner and a second lower corner;
a first sill corner bracket configured to fit on a top of the sill and extend from the first lower corner partway along the top of the sill and partway along one side jamb of the frame assembly;
a second sill corner bracket configured to fit on the top of the sill and extend from the second lower corner partway along the top of the sill and partway along the other side jamb; and
a movable bottom sash, the movable bottom sash configured to move within the frame between a closed position where a bottom portion of the bottom sash engages the top of the sill and an open position where the bottom portion of the bottom sash is separated from the top of the sill;
the bottom sash comprising a bottom rail, wherein the bottom rail defines a channel to receive at least a portion of the first corner bracket and the second corner bracket therein when the bottom sash is in the closed position.