280mm X 280mm(11,280mm X 280mm(11,Silicone Heater 400x400mm 1000W for Creality CR-10 S4 3D Printer Bed w/Screw Holes (120V),500mm X 500mm 120V 1600W, with 3M PSA & NTC 100K thermistor, KEENOVO Silicone Heater Pad Huge Mega Super-Sized Large Commercial Industrial Grade 3D ,Keenovo-シリコンヒーター6