Yes. Aeratron fans do have an accessory kit available that allows the fan to be installed on a raked ceiling. For raked ceilings under 17 degrees you will only need to purchase an extension rod kit. But for anything over 17 degrees up to a maximum of 40 degrees a raked ceiling kit and an extension rod kit will need to purchased.
The extension rod kit is used because the fan will need to hang low enough so that the fan blades do not connect with the angled ceiling.