Larson Manufacturing Company of South Dakota, Inc.

Andres Abraham

Kelly D Nordgaard

A secondary window system installable within a primary window frame that includes a top horizontal member, a bottom horizontal member spaced from the top horizontal member, and first and second side members, the secondary window system including a top channel member attachable to and extending along at least a portion of the top horizontal member of the primary window frame, a secondary window frame comprising a header, a sill spaced from the header, first and second side jambs spaced from each other and extending from the header to the sill, and a secondary window opening defined by the secondary window frame, a top channel retainer engageable with the header of the secondary window frame, and at least one hanger engageable with the top channel member and the top channel retainer, wherein the secondary window frame is rotatably moveable relative to the primary window frame about the at least one hanger.

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Maple Grove, MN, United States of America

Andres Abraham