You can probably order one online. Just google the make and model number. You local HVAC supply house could probably get you one as well but alot of them will only sell to contractors. All you can do is call and see. I have also purchased items from ebay cheaper than i could get them from suppliers and I am a contractor.

Hi,

Here you go

http://www.expertappliance.com/mitsubishi-mr-slim-parts.html

Here is a tip that wrote about how to buy heating and air conditioning parts online.

How to find Air Conditioning, Heating and Furnace parts online.

heatman101