This rectangular marble top panel for the Montana system measures a width of 69.6 cm and is available in the depth 30 and 38. The top panel is made of 12 mm marble with rounded front and rear edges but straight end edges to allow two panels to align. When a top panel has to cover several units, an extra 1 mm is calculated per unit. Choose the marble top panel in the white polished Bianco Carrera or the black polished Nero Marquina.