Karina is particularly suited for narrow spaces. Its supporting structure is made of steel interlocking elements and is available in three different colours: black (RAL 9017), white (RAL 9010), or grey (RAL 9006). The accessories are black.The polished beech wood treads with a light (natural) or dark dye are of a special shape to guarantee maximum utilisation of space without compromising the stair functionality. The staircase is supplied with one side railing. Visit Arke website for more detail about this product. More pictures after the jump.