This square kapton heater mat (30cm x 30cm) heats up to a maximum of 120ºC on 12V. The heating mat is provided with a layer of glue, so that it is easy to attach to the heated bed glass. The kapton mat is suitable for use with PLA and ABS filament and prevents warping due to cooling too quickly.
NB: The power consumption is very high (25A). Always use the kapton heater in combination with a relay. So do not connect the mat directly to the electronics.