Extractor hose window pass through

This is an easy to print two part mount designed to be used as a pass-through for connecting an 80mm extractor (or AirCon) hose to a sheet of something.I've used it for a fake window I've created to use on days it's too wet or cold outside to just have the tube going out my window with the window open.I've got a 3mm thick sheet of clear perspex cut to the size of my window frame and lined the boarder with magnetic tape.I've then matched the placement of that lining with white metallic tape on the window frame which blends in to the white PCV when this isn't in place. So the perspex just clips in place when needed and effectively the room becomes warm and sealed again even on cold and rainy days.To fit this passthrough, I used a 76mm hole cutter and cut a hole for the pass through, then placed the part inside it and marked out the 4 spots for the bolts. I then drilled out the holes for the 4 bolts.Then it's just 4x M4 bolts and nut to hold it all together.The