Material metal, can move the position, use: hot heat, exhaust, wind concentration, example: decoration in a closed room, volatilize toxic odors, use an industrial fan to put at the door, blow fresh air into the room, or put it in the room near the door, blow the indoor exhaust gas out directly, cut the sparks that pop out of the steel plate, and it is best to match the industrial fan next to it, so it is very comfortable, size: 14 inches = 35cm, color: silver