5-Pack 4mm Inner Potentiometer Shaft Control Knobs for Precision Adjustment

Adjustable height to suit your different installation requirements. Space saving top mounted type. Mushroom shaped roof exhaust fan not only brings fresh air into the vehicle, but also prevents odours and gases from entering the caravan living space Rated voltage: 12V; rated speed: 1800 rpm; rated air flow: 60CFM; mounting thickness: approx. 45mm-140mm (1.8" - 5.5"); overall dimensions: approx. 145 x 103mm / 5.71 x 4.06", round opening diameter: 118mm (4.65") When shopping, please pay attention to the Size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications . !