Rear Aircon hole size


Hi gurus,

Looking at the attached pics, are you able to let me know the size the hole will be after the aircon is taken out?

As I think its best I have a vent already bought to fit into the hole asap. So its not open any weather.

cheers and thanks for any advice




2015 3500 X long limo RV
Don't remember the size, but factory hole is quite big and you will find some aftermarket making adapter plates for it.


Active member
If you remove the internal plastic cover with vents or the external cover, you will get a good visual indication of the size of the hole. There is a picture on an old thread that hows the size of the hole.

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