Yoopai enclosure exhaust fan/vent adapter

I bought the Yoopai enclosure for my printer, and then decided to buy the exhaust fan kit they offer.  The hole on the side has no way other than tossing the fan into the enclosure to seal and still have it attached.  I designed this simple adapter that sandwiches the enclosure and blocks off the hole while having the fan attached.  I've uploaded the cad file in case you want to make changes.  Hope you enjoy, please leave feedback.