To obtain a flat type open refrigerated display case which can flexibly cope with any increase in the type or quantity of merchandize on display at a counter part and furthermore, achieves an easier handling on the part of stores without eventual complication especially in the structure thereof to allow greater buying desires among customers easily and a larger gathering capacity to the customers in a type which is provided with the counter part at an upper part of a central partition wall.

The flat type open refrigerated display case is constituted of a counter lower part 4 for building a counter part 2 directly at an upper part of a partition wall and a counter upper part 5 which is linked to the counter lower part 4 so as to be made free to overlap the counter lower part 4 and also free to hang over in the direction of an opening part from the counter lower part 4.