A refrigerating unit including a base, a heat exchanger, and a shroud attached to the base The heat exchanger may have opposite side edges defined by a pair of substantially cylindrical headers, at least one of the headers having an inlet tube or an outlet tube extending, and a substantially rectangular shroud attached to the base and being provided with notched corners. The shroud has a top surface with at least one elongate boss, and integrally-formed resilient gripping portions which capture the heat exchanger headers. The heat exchanger is mounted to the base through engagement with the shroud, clearance is provided between a shroud notched corner and the inlet or outlet tube, and the boss provides a means for supporting the shroud when placed upside down.

 
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