40mm Fan Duct - Water trap concept

First off, let me please ask that if you like these designs and find them useful please do like, follow and share my content. And if you have any ideas or concepts to modify the content I would love to hear!

I built an electronics enclosure for a water fountain motor controller and needed a fan duct that would allow me to ventilate the enclosure successfully using a 40mm fan while also ensuring that the opportunity for insects and frogs to obstruct the outlet was minimised.

Just a quick d