Champion advertise custom room but, would not put baker board under vinyl siding in under room/deck, bees enter room thru poorly misfitted screens. They would not insulate roof where they tied into existing roof with there I-beam. There is no way to heat/cool a room with direct access left to outside air thru roof vents.
I would not recommend anyone purchasing the patio rooms or doors or window. They are very rude and scary people...