With the second air conditioner break, remove the air conditioner. I bought a blower fan and a heater unit with corrugated board for a while, but I found this item with a monotail and purchased and installed it. The price is cheaper than the one you see in a certain auction, and I am very satisfied. Though screw holes for installation are opened in the product, it seems that it does not seem to be problematic though it is installed only with seal plate No. 1 and No. 2.