With V3B, you have ultimate stability as the same species are on the top and the bottom, while StableCor™ remains in the center.
When you have opposing forces coupled with StableCor™, it eliminates any possibility of length shrinkage, width shrinkage, cupping, and expansion, even while the flooring is under added stress from the radiant heat.
V3B is a precautionary measure on an already risky installation where you could have hardwood movement.
100% success rate of installations over radiant.
Still the same flexibility of specifications with the guarantee of knowing it will remain stable and flat.