Notice: Bonus remote control. Batteries are not included. Fits standard 40CM x 40CM opening for easy installation. Low power consumption High fan speed: up to 1200rpm. 10 fan speeds selection. Reversible airflow Built in insect mesh High quality PC material Fit 40cm x 40cm Roof Opening Easy Installation Back-up manual lift knot Remote controllable Note: Bonus remote control (Batteries are not included). Suits hole size: 40cm(15.75″)x 40cm(15.75″). High fan speed: up to 1200rpm Fan diameter: 29cm Height When closed above roof: 95mm Dimension:Please check gallery photo Power: 18W Voltage: 12V Current: 2A. The Caravan Roof Vent should be a crucial part of your caravan. It can help to create ample ventilation for your caravan during summer and keep condensation to a minimum during any wet season. Plus, the vent also prevents any damp or mould from developing inside your caravan that could be hazardous to your health. Our roof vent features an automatic rain sensor that closes when rain is detected. And unlike other vents, our vent also has an insect mesh to keep insects such as mosquitoes out. The PVC plastic roof vent has 10 air speeds with up to 1200rpm to circulate the air thoroughly through the caravan. For total convenience, the roof vent comes with a remote control with a range of up to 18m. Better still, the vent also has a manual knob control to close or open the vent in the event of emergencies. Not least, the roof vent can function as an intake or exhaust fan when required. Insect screen(Stainless steel). 10 fan speeds reversible airflow design. Manual lift lid design.