About this 3D model

This is an air ventilation cover & grill designed to be inserted into and cover ventilation holes in ducting often used within conservatories, garages and much more. I designed this to replace the ones that came with the original conservatory in my home that had disintegrated over time. The inner hole is 65mm and the far edge of the outer brim is 86mm. The holes they are designed to cover should be less than 86mm to allow a glue or other sealant to be used to affix the vent to the surface of the ducting.