Windows, Rooflights & Vents › Whale Black 65mm Air Duct Fixed Vent Image 1 of 1 Whale Black 65mm Air Duct Fixed Vent £77.40 Whale Black 65mm Air Duct Fixed VentGenuine pre-owned / replacement caravan part from Scotia Caravan Breakers. Includes standard MQL drop-ship handling (£25), carriage (£50), and margin. Get notified by email when this product is in stock. Add To Cart Added! Whale Black 65mm Air Duct Fixed VentGenuine pre-owned / replacement caravan part from Scotia Caravan Breakers. Includes standard MQL drop-ship handling (£25), carriage (£50), and margin.