What's making sofa bed so heavy?
The 3 worst things about a sofa bed are 1) it weighs a ton with that cantilevered steel frame; 2) it isn't a comfortable bed, and 3) it isn't a comfortable sofa.
is some one sitting on it?
There are different kinds of materials in making a sofa. And it varies to their sizes, from small to king size. And that is the reason why there are some sofa's that are too heavy to carry on and others are a little bit okay to lift it up.
the steel frame and springs of the pullout bed and made of hardwood