The Kaldera 62 is the largest of the Kaldera undermount basins. Rectangular in shape, it is designed to match the Kaldera built-in bathtub collection but naturally complements other models. Features an internal overflow. Also available in a smaller size - see Kaldera 56. Crafted from the trademark Victoria + Albert QUARRYCAST® material, composed of volcanic limestone and high performance resins formed from a single casting, making it harder and more durable than acrylic basins. QUARRYCAST® is warm to the touch, highly insulated, strong, very easy to care for and guaranteed for 25 years.