Parametric square ventilation cover for Fusion 360 with optional mesh and insert clips.

On the side there is a text with approximation of the open area (in mm²). 

Parameters

Insert_width/Insert_hight/Insert_depth: Dimensions of frame that goes into wall/pipe

Rim width/Rim_thickness: Dimensions of front plate.

Rim_radius: Radius of corners on frontplate

Use_mesh: Binary (1 or 0) enables/disables mesh

Mesh_size: Open size of mesh

Fin_thicknes_front/Fin_angle/Fin_length: Dimesnions of fins

Fin_count: Number of fins

Use clips: Binary (1 or 0) to enable external clips