What is the lightest Double Slide out Truck Camper?

From my research all those campers "list" in the range of 4000 lb, but you have to follow the option list to get more accurate weight.
When I see huge difference in the space feel with dinette slide, the 2nd slide usually adds more floor space or 2nd sofa, both I don't really care much about.
Than if floor space is important to you, whole wall slide is between.