One of our metal windows is missing a screen and I'd like to replace it. I don't have other windows of the same size so I can't easily copy the screen dimensions. How should I measure the window opening so that the new screen will install properly? The instructions that were included with my screen framing kit are insufficient and literally say "measure the opening".
Mr. Google suggested measuring the full length of the screen opening and subtracting 1/16". If I do that though, I would think that the screen would be too big to fit. Can I get some advise on where exactly I should measure?