Heatbed MK2B Upgraded MK2A for Mendel CNC 3D printerSpecification:Dimensions: 214mmx 214mmLaminate:FR4 1.6+-0.15mmRed Soldermask - Both sidesWhite Silkscreen - Both sidesPower Input: 12V or 24vResistance Between 1.0-1.2 ohm (12V) or 3-4.5 ohm (24V)What you Get:1 x MK2B heatbed Plate 214x214mm..