I bought a home that had a theater in it. I need it to be my gym.

I found it online here is a link that should answer most of your questions about the screen.

https://www.projectorscreen.com/products/screen-innovations-fixed-2-100-49x87-16-9-pure-white-1-3-ft100pw?utm_medium=cpc&utm_source=google&utm_term=&utm_campaign=BP+%7C+High+Priority+SKUs+%7C+PMAX&hsa_acc=1859770173&hsa_cam=21500646604&hsa_grp=&hsa_ad=&hsa_src=x&hsa_tgt=&hsa_kw=&hsa_mt=&hsa_net=adwords&hsa_ver=3&gad_source=1&gad_campaignid=21490367670&gbraid=0AAAAADn9fPEo8qQtUQsaPA309amQLzC2D&gclid=CjwKCAjw3ejRBhAdEiwADkqPn1dHxqfUmdIdLycOQ3uz9FzlXdb44Qsl7tYOOhAUL6XN160jIPS9yRoCH4AQAvD_BwE