Hi Nicky, The Home Cinema 5050UB projector can be used in any environment, but it is designed for home theaters. Typically, education or business projectors, like Epson PowerLite or EX series projectors. Regarding big spaces, 4K refers to the number of pixels in the display, not the size venue they work in. So, 4K works fine in large spaces. Regards, Mark - The Epson Team.