150mm air filter box with inserts

I was looking for a way to prevent pests from getting into the box and to prevent disturbing light from penetrating through the supply air (yes, the material is suboptimal, I know), so I designed and printed a magnetic 150mm air filter box. 

I use the filter twice for the supply air in conjunction with 2 backflow flaps and as an activated carbon filter replacement during the vegetation phase. The filter box has a replaceable insert so that the filter mats can be washed.

The filter mats must be cut to size with scissors. All filter mats with a thickness of at least 15 mm can be used.

Magnets: 60 x 13,5 x 5 mm (https://www.amazon.de/dp/B07LF6XYXW)

Air filter mats: Limodor 238x238 G4 (https://www.amazon.de/dp/B00B0LAQ66)

Printing profile:

PETG

5-6 perimeters

25% infill

no supports (works for me, but maybe youll need some for the magnet insert of 60mm)

Filament used: Creality CR Tranparent PETG (dont use transparent, be smarter)

(I am currently working on an update to improve the usability and design.)