Both a forward direction and a rearward direction of storage racks 20-1 and 20-2 are set to be opening portions 23 and intake and exhaust ducts 61-1, 61-2, 62-1 and 62-2 are provided on doors 11a and 11b in the forward direction and the rearward direction of a storage container 10. Consequently, a ventilation passage linked to an outside from a wall surface in the forward direction of the storage container 10 via a wall surface in the rearward direction is formed for each of storage shelves 31-i and 32-i of the storage racks 20-1 and 20-2 so that heat generated from an electronic apparatus can be efficiently discharged to an outside of the storage container 10, and furthermore, the storage container 10 itself is configured to be isolated electrically by a radio wave absorber so that a function of an anechoic chamber can also be ensured.