Why does it matter since you are not gtting any warranty at all. IMO any spring in a sofa is just waiting to be worn out I have never owned a spring filled piece of furniture we have all Italian made and they use a webbing stytem that wears forever . We gave our son a 40 yr old sofa we had from new with 3 kids . That sofa still looks like new but the seating cushion foam had worn so he refilled with new foam and now it sits exactly like it did when it was new. I think NA made stuff is all made to replace and drive sales The Europeans are much more concerned with keeping good quality things out of the landfill. I think if that sofa is comfy and you love it get it it will probably last as long as you want it for. I like 2 cushion sofas since the middle rarely gets used and the fabric is great for FR use too.