The ventilation grilles’ or ’air vents’ are the vents located in the middle of the ‘sidewalls’.

I have this schoepenroosters met in a local do-it-yourself store and are made from plastic. The dimensions are 150 mm x 220 mm.

This (dummy) grids must have the correct white color and are attached with 4 bolts. Maybe in a later stage, they can be connected to a custom designed ventilation system.

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Translated by Yandex.Translate and Global Translator