The image shows a close-up of a gray metal box with a black lid. On the lid, there is a white label with a blue water tap and the word "DRAIN" written in bold letters. Below the label, there are two warning signs - one is a triangle with a line through it and the other is a warning sign that reads "Caution: Do not touch the drain." There is also a small silver knob on the lid of the box. The box appears to be a water heater or a boiler.