UPM Grada® UnderCover is a new thermoformable wood panel dedicated to industries that use modeled components and made with layers of birch veneer glued together with a new type of glue (the latest generation glue does not contain components dangerous to the health). The UPM Grada® woods are certified. UnderCover: -Cost effective solution for components intended to be for example coated or to be used as the frame. The two sides are not classified and may include knots and cracks. The surfaces are not smooth.