... ,8pieces)Pitch of fins: 8, 10, 12mmDefrosting way: H: hot-ammonia defrosting A: auto defrosting by air W: defrosting by waterSolution ... (left-side), (opposite to axial air blower, indicating R when solution feeding is on the right)The fin ,case and tube ... deforst,Electrical heating,and hot gas deforst to be choosed Ammonia Air Cooler For Cold Room