Ceiling Vent Retaining Clip

I had to replace an exhaust fan in our toilet recently and one of the retaining clips that hold the fan unit into the plasterboard ceiling was broken. After pricing a new fan unit I decided to make a replacement clip.The clip rotates to lock the exhaust fan in place by screwing the original screw and unscrewing will rotate the clip and release the fan assembly. On my exhaust fan there are 3 clips per fan unit.This may not be the same as your unit.Screw is 4 mm x 45 mm. Printed part in PETG. Print time 10 minutes for single or quicker per unit if printing multiples. 1.35grs per unit.