Specifically designed to adapt to the Grizzly Dryer for multi-cage drying. The adapter comes with 3 separate 8' long ducts made out of a very high quality vinyl that is very flexible to reach most cages with a 4" opening. At the ends of the ducts each has its own control adjustment vents that can adjust the amount of natural air to be released in each of the 3 cages separately, all the way to an "off" position. See more images for example.
Den Drying Kit
Dryer Kit Combo