Question: what is the standard size of a 2 seater sofa?
Answer: Key dimensions: 2-person sofa: 50″ seating width (does not include width of the arms). 3-person sofa: 78″ seating width (not including arms). 4-person sofa: 90″ seating width (not including sofa arms). 5-person sofa: 108″ seating width (not including couch arms).