This edge system uses engineered foam that locks into the innerspring coils and is welded to the Balance Channel Base™. The result is a single working unit that enhances the comfort, support, and durability of your sleep set. It also provides uniform comfort and a consistently firm seating edge across the entire mattress.

One of the industry’s premier boxspring designs, our UltraSteel Working Boxspring features graphite-coated steel nodules – tempered for added resilience – that rest atop a kiln-dried Canadian Spruce frame with a durable steel center rail. It absorbs up to 30% of the weight placed on the mattress, which makes for a more conforming sleep set and increases the comfort life of your mattress.