I have United Windows (made there in NJ) and I think it's model 4150. They were installed around 2004 and I recently purchased the home. I cannot keep the screens in the windows. I think the plastic ones might have been the originals. The last 2 photos (metal) also seem to work.
The plastic ones seem to be 1 and 1/16" as opposed to 1" so wasn't sure if any of your latches would work. Could you let me know? Also, if there is a sturdier way to keep these screens attached, I would consider. I have cats and they keep pushing them out!
Thank you...I think they must have been pretty inexpensive windows but cannot afford to replace right now.