This model is a reusable or refillable activated carbon filter pack. Activated carbon pellets are easy and much cheaper to buy than a completely new filter every time. It consists of three parts. The main frame and two identical covers. The lids are sized to fit the grilles of the activated carbon filter package supplied with the Bambu Lab X1.
In addition, they hold in place with a form fit, so there is no need to glue and the lids can be easily opened again.
The smallest gap between a filter and the walls of its installation space reduces the filter effect. Therefore the model also has a wasp waist so that, for example, a commercially available window seal can be applied.
The author marked this model as their own original creation.