Portable AC Windowscreen Insert Clip

I have a portable AC vented out a casement window through a custom polycarbonate insert, but the backpressure from the exhaust was causing the Velcro to peel off of the polycarbonate and for hot air to make it back into my apartment, so I made this clip to hold the insert to the windowscreen. 

This clip was designed for my specific windowscreen, and for 1/8" polycarbonate and standard Velcro. There should be enough squish with the velcro for it to work with other windowscreens and with slightly different thicknesses of inserts, but you may need to scale the model for it to work for your window.

Print out of PETG, ABS, or some other temperature resistant material. All of my PLA test prints melted and fell off the window after a few hours.