Refrigerated Topping Units with Lids GASTRO LINE PLUS provide chilled storage for ingredients in GN containers directly at the workstation. SX models are designed for GN 1/4 containers, while SY models use the larger GN 1/3 format. Each unit can be placed on a suitable worktop as a standalone refrigerated ingredient station or combined with a refrigerated pizza table. Different lengths provide a choice of capacity according to the required number of GN containers.