I am the original owner of this unit. Purchased new a few years ago to use to power an off grid storage building. It has worked flawlessly and still does now. Still have original box, owners manual and all that came with. Only selling because I upgraded to a 48V battery system. This unit delivers 1500 watts of pure sine (cleanest) AC signal and can easily surge to 3000watts. Pure sine is ideal for appliances and things like C-PAP machines that need a good sine wave Specs:Length 17"Width 10"Heigh 4.5Weight 17lbs