The open-front food display cabinet of the present disclosure has one or more food display compartments. Each compartment has a shelf on which food products are placed and an air duct that circulates conditioned air throughout the compartment. The compartment is further defined by the side and rear walls of the cabinet. A fan and air conditioning device circulate the conditioned air into the air duct and compartment through an exit port of the duct. A profiled diffuser is connected to the air duct port and bends away from the duct port and ends thereof, so that more air enters the sides of the compartment. The duct port may also be profiled so that more air passes through its sides than its center. Other features to assist with even air flow and temperature profiles include perforations in the air duct, baffling the air flow in the duct, and adjusting the fan output.

A protective assembly includes a box tube member with an inner channel and a lower slot, a channel member configured to slide over the box tube member, and a sliding mounting member configured to slide within the inner channel of the box tube member. The sliding mounting member includes a lower opening and an upper threaded opening. The assembly also includes a support leg having a first end portion, an intermediate portion, and a second end portion. The first end portion of the support leg has a threaded end and is configured to be inserted through the lower slot and through an opening of the sliding mounting member and screw into the upper threaded opening of the sliding mounting member. The intermediate portion of the leg has at least one flat engagement surface for engaging a fastening tool.