What's the correct name for something which looks like a bedspring, but there's no springs in it?
The top surface is just a couple of layers of corrugated cardboard over crosswise wood slats spaced about 18" apart. The whole thing is covered with fabric just like a bedspring.
Never encountered one of these before, but just had to replace a busted slat in one for a friend. Almost couldn't believe how crummy the wood used in it was. I've seen a lot better wood on pallets.
Jeff