Abstract: Device to distribute air for glass-fronted cabinets, counters, or in general containers which are refrigerated, heated or otherwise climatically conditioned, said containers (10) comprising a compartment (15) defining a volume containing the foodstuffs to be conserved, and possibly one or more overlying levels to contain the products facing the customer's side, said containers (10) also comprising a technical compartment (16) inside which the ventilation unit (22) and the thermal conditioning unit (30) are housed, said containers (10) comprising at least a transparent front element (20) facing the customer's side, the device comprising a conveyor element (25) transparent and substantially invisible arranged inside the compartment (15) and able to define, together with said transparent front element (20), an air-conveyor channel (26) which affects at least part of said transparent front element (20).