Laser ventilation opening into polycarbonate insert in window

I solved a simple and quick connection, the Creality falcon 2 pro laser ventilation outlet into an eye equipped with a 4mm polycarbonate insert. I designed a flange with a quick hose connection (inner diameter 73mm) and a simple eccentric locking. To tighten the flange to the polycarbonate, 5 pcs of M5 countersunk screws and 5 pcs of M5 nuts are needed. To attach the eccentric locking, M4×10mm sockets with a cylindrical head and an M4 nut, after tightening, it is necessary to secure the thread with glue so that the screw does not loosen when the eccentric moves. The extension of the outlet from the flange is bent downwards due to possible rain and is glued. Flanges and extensions can also be secured with sanitary silicone for greater tightness.