Hose Pipe PVC Duct Extension Kit for Dimplex Air Conditioner. Brand new, premium quality vent hose kit to fit Dimplex air conditioners. This extension kit allows you to extend the reach of your existing air conditioner vent hose, providing greater flexibility in placement. Made from durable PVC duct material, it is designed for long-lasting use. The kit includes a 3-meter long hose with a 5-inch diameter, suitable for most standard air conditioner vent connections.