Knife latches

A handy person from Richmond, VA says:

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.

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Tom from SWISCO responded:

Thanks for reaching out to us, and for your patience during this busy season. I don't recognize these latches off-hand, but we may still have something that can work for you. 

Please give me a little more time to see if I can track this old model down and I'll get back to you ASAP.

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Dave Sr. from SWISCO responded:

I unfortunately couldn't find your exact knife latch. It might be just a little too old. 

That said, we sell two types you might want to consider: our 70-222 and 90-227. Review the design of these two parts and see if you think you could get them to work. You'll also find two videos below that may help you come to a decision.

How to replace a window screen clip
How to replace a window screen clip
How to remove screen knife latches
How to remove screen knife latches
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