This isn't really home Improvement, but store improvement. I work at a thrift store where 100% of our proceeds go to the shelter and we have shelter animals right at the store who are up for adoption (11 cats running around, never a dull moment).
Now we would like to keep our donation door open to let in the spring air, but yet we don't want our cats running out of the store. I saw some door products such as this one. stacksandstacks.com. However our door is too wide. Our door measurements are 3 feet 9 inches wide and 7 feet and 1 inches tall, and we have a metal frame.
Any ideas on making a screen door "with a latch" so the cats can't just push it way out. Any input would be great.
Making a simple wooden frame to fit inside your metal frame wouldn't be that hard, surely you have someone who could help with the project. With one that large make sure to put good cross bracing on it. Also with the cats running around I would suggest using hail screen at the bottom to keep them from scratching holes in it. I wish you all the luck in the world in your wonderful work, if I were closer I would sure help you out.