Container with sidewall extension and method for making

A collapsible container, comprising;

• a base, said base having a surface defining a base plane, said base having a coupling means with a first configuration;
• a sidewall extension structure, removably coupled to said base, extending in a direction perpendicular to said base plane;
• at least four sidewalls, each sidewall being pivotally attached to said sidewall extension to permit movement of each of said sidewalls between a first collapsed configuration substantially parallel to said base plane and an uncollapsed configuration;
• said sidewall being non-integral with said extension structure and pivotally attached to said sidewall extension;
• said sidewall extension structure having means for attaching to said base, substantially without modification of said base and second means for pivotally attaching to a sidewall, substantially without modification to said sidewall, said second means including the upper edge configuration of said sidewall extension structure, said sidewall pivotal between a first collapsed configuration and a second uncollapsed configuration, said upper edge configuration of said sidewall extension structure being identical to said first configuration of said base coupling means;
• and
• means for releasably latching said sidewalls in said uncollapsed configuration wherein said sidewall extension structure includes four sides, each side having a substantially planar surface.