Heat Bed(hotbed) / Glass bed for i3 Mega/ Mega S Excellent adhesion: Ultrabase covered by microporous coating, shows strong adhesion during printing. Easy to take off models by hand or with a little help from the scrapper for very large models. Ultrabase integrated with heated bed: Super Flatness, Fast and uniform heating. It has been inspected to ensure flatness better than 0.2mm (normally within the 0.1mm). And the printed models will have a very smooth and wonderful bottom surface. Durable: The special coating is inorganic and has a hardness of 8 Mohs, and it is capable to work at 400℃. Compatibility: Upgrade your printer with Ultrabase heatbed! It is compatible with all the Cartesian style 3D printer with a MK2/MK3 heated bed. You can get full support from the manual and video. Heat bed Specification: Material: Aluminum base Voltage: 12V/24V Max Temperature: 120 Degree Celsius Dimensions: 240mm x 220mm Thickness: heat bed 1.5mm Resistance around 0.9ohm for 12V Resistance around 3.6ohm for 24V 100 Degree Celsius supported for both 12V and 24V Note: Suggested bed temperature may vary depends on the filament material; Please properly level the bed before printing; Never let the nozzle rub against the Ultrabase directly;