The Ductable Split AC is a ceiling suspended unit that cools the conditioned space through the Duct network. The Package AC unit is Floor Mounted unit that is installed in a separate room commonly known as AHU Room.
The Ductable AC is a best and big package, generally of 5.0 Tons of refrigeration to 25 tons of refrigeration and from this stand alone units ducts can be run to all the different rooms or areas/ office/ home/halls to effect air conditioning. The advantage is in cost reduction. Fast , easy and cost effective installation.
For huge areas this can be deployed and provide us better, fast and cost effective results. In big malls, Banquet halls.