It has a built-in louver to allow overheating. It allows fresh air into the cabinet. If you intend to use a large compressor (RV33) or if you live in a warm region, the manufacturer recommends using a cooling fan. There are prefabricated holes at the bottom of the cabinet to allow cables and airline to come through.
Seems to work well
The aerator pump and all equipment arrived in perfect condition. Assembly was easy following directions. Mounted pump in fan-house and pulled the weighted airlines and diffusers out into the pond without any issues. As recommended, I used a duck decoy tied fast to each aerator with sturdy nylon cord. The airflow was more than expected, which immediately circulated the pond water. Now, nearly two weeks later the water clarity is improving and everything is working perfectly. Totally satisfied.
Cabinet insulates much of the noise of aerator motor and looks good amongst our landscape.
It was a great purchase to protect the compressor from the weather .
Works great. Easy to use and no problems.