Fan plenum assembly and attachment in a merchandiser

A merchandiser comprising

• a case defining a product display area, the case including a base and an air passageway extending from the base and in fluid communication with the product display area;
• a plenum housing coupled to the case and substantially enclosing an end of the air passageway, the plenum housing defining an opening configured to receive a fan to direct air into the air passageway, and the plenum housing including a side wall having an elongated aperture with a major axis, the side wall having an edge oriented to engage a surface of the base;
• a bearing coupled to the side wall and defining a pivot for the plenum housing, the bearing including a positioning element disposed within the aperture;
• and
• a hinge pin rotatably coupled to the bearing and defining a pivot about which the plenum housing is rotatable,
• wherein engagement of the positioning element with the aperture permits movement of the plenum housing relative to the bearing along the major axis to provide axial adjustment of the plenum housing while inhibiting rotational movement of the bearing relative to the plenum housing, and
• wherein axial adjustment of the plenum housing along the major axis is configured to alter a position of the plenum housing relative to the surface such that the edge of the plenum housing engages the base to limit air infiltration from adjacent the surface.