It is the 16:9 config, a manual pull down model. Sorry I cant help with the specs. I dont use the screen for two reasons. 1, The larger Images are really great for the movies and 2, I Have theater style curtains and a vallance across the top to look like a theater spaced about two feet out from...
I bought one of these 4800's also and it is just awesome! I will be selling the 100" screen that came with it and just using the wall for now. That screen does not do it justice! I bought a ceiling mount from a guy on ebay for $65 if you need one. He has free shipping and fast service too.Enjoy!