Manual Control Vents Fan Ceiling Air Ventilation Low Noise 10 Blades for RV Caravan Bus 13.4x13.4in24V 0100333 Item Type: RV Vent Fan Material: ABS Motor Current: 0.5-2.5A Hole Size: Approx. 340 x 340mm/13.4 x 13.4in (maximum: 380 x 380 mm) Dimension: Approx. 420 x 420 x 182 mm/16.5 x 16.5 x 7.2in Installation Thickness: Approx. 38-95 mm/1.5-3.7in Motor Power: 5W Power: 5-30W adjustable RPM: 1000-1800/minute Fan Blades: 10 Applicable to: Large vehicles such as motorhomes, RVs, buses, yachts, etc. Features: The shell is made of imported and anti-yellowing plastic; equipped with stainless steel mesh Installation Method: Open hole installation Usage: Install and fix and start working Wiring: Black wire connected to negative pole, red wire connected to positive pole