I have a rca 60 in TV and want to replace the outside protector screen and the plexiglass screen behind can I use regular plexiglass. What is the cheapest fix. Thanks

I've read about these before, I assume this is one of the older projection screen tv's.

There are actually 3 screen layes and none of them are a simple sheet of plexiglass. You need to have someone come and fix it properly, these screen have special coatings and won't display a proper image if the wrong thing is used.