Hot end fan cover Anycubic i3 Mega

I decided to give it a go, cutting out the holes that cover the hot end cooling fan and design a fan cover in preparation for my newly ordered Sunon fans. One for the hot end 40x40x10 mm and one for the motherboard fan 50x50x10 mm. To bad I had the idea too late to use a decibel meter on my phone to measure the noise level in the original state, as you all now it is rather loud. After I cut out the big hole I measured 71.8 dB and the whistling noise was gone, it really made noticeable less noise