Roller shutter inner funnel

Over time, this roller shutter guide insert broke on several shutters, so I designed a new one. It can be placed into the end profile of the aluminum shutter box and is compatible with a 44×53 mm profiles. Including mosquito net guide.

I have tried to reinforce the model, and I used 5 walls to make it stronger. I suggest to put to the plate as it is on the picture, and use tree support.