My building, from the 80s, has no central air, but through wall cutouts the size of a window unit. However, when I went to buy an air conditioner I found that o

My building, from the 80s, has no central air, but through wall cutouts the size of a window unit. However, when I went to buy an air conditioner I found that only one company made a unit the exact right size and the cost 3x more than the BTU equivalent window unit.