After washing my home windows, I noticed the screen did not fit back in place due to one of the plastic corners being broken.  I used one of the other corners to measure the dimensions and created a model in TinkerCAD that can be printed in ABS.  The fit was perfect and I printed four to replace all of them.  Two of them need to be mirrored so you have a left and right that fit in the same tube on the top and bottom.  It was a lot better to print just four instead of buying a bag of 100 at Home Depot.