Ventilation duct for Ender 3

Designed a ventilation duct for the Ender 3 as a protective cover of the control fan. Normally, the air is sucked in from above and dirt can enter the housing. The channel is fixed on the front side with a small magnet (Ø8x3). At the back, the ventilation duct is fixed with a clamp. As a filter, a thin fabric between the housing and the lid can be clamped into the intake opening. A glued-on seal on the lid completes the connection to the control housing. I hope the solution also reduces the loud suction noise.