The seller didn't want to include "Installing fans" part..
Do not cut big holes everywhere..
Have 2 x 120mm fans($10 each)
AC/DC power adapter .. about $10..
install 2 x dryer vent duct ($5 ~ $8 each)..
Is this for indoor or outdoor?
It might look ugly when you have a big garbage can in your living room.. (Priceless)