The item itself has the following dimensions: LxWxH 35 x 30 x 12 cm The grill are has the following dimensions: LxW 29.7 x 23.5 cm It is also possible to open the grill completely to double the grilling surface. Then it would be: LxW 29.7 x 47 cm

Yes, you can turn it off with the little knob to adjust the temperature.

No, they can't be removed, but they are easy to clean because almost nothing sticks to them.