Should work with most 80mm fans. Bolts holes are on 71.5mm centers. M4 bolts will friction thread into the duct and have clearance holes through the shim.
The shim makes clearance for the blades to spin, if you are making your own grille by drilling a bunch of holes through a wall.
Uses vacuum robot filters. Search for “Filter Replacement for ILIFE V3 V5”
The author marked this model as their own original creation.