A refrigerated merchandiser includes a display case 10 having an open front and defining a product display space 30 wherein product 15 is hung for display and customer access on a peg bar support system 50. Refrigerated air passes into the product display space 30 through a back panel 24 perforated with air inlet holes 48. A baffle plate 60 lies superadjacent the peg bar support system 50 and is positioned relative thereto so as to provide an airflow gap 65 between its rearward edge 64 and the back panel 24 and an airflow gap 63 between its forward edge 62 and the tag moulding 58 of the peg bar support system 50. Refrigerated air passes through the rearward and forward airflow gaps to cool the product displayed on the peg bar support system. Additionally, the baffle plate may be perforated with a plurality of holes to provide additional airflow passages 70 through which further refrigerated air may pass to cool the product displayed on the peg bar support system.