Hatch for Ventilation Elbow

Hatch, designed for rectangular inserts 220x55. “Ventilation Elbow 220x55” I personally designed it to be mounted on the boiler vent, when it vents the hatch opens then stops it closes. I recommend printing the pins and washers together, the other pieces as you want. it might be a little difficult to fit into the insert, the shape is precise, it fits together 3 walls 15% infill, PETG PLA;Gasket TPUSupports like image below (not inside the insert or only in the short part);After assembled insert