This XPOWER 25 ft. long ducting hose is a rugged PVC vinyl-coated polyester fabric hose with a black external PVC strip which resists exterior damage when dragging. This hose features a 12 in. diameter and an integrated spring steel wire support coil which is flexible for expansion, compression and angled turns.Features. Great for heating, air conditioning, dehumidification, blower, ventilation and exhaust jobs in a variety of industrial, residential, and construction applications.. This model is also compatible with the XPOWER X-12 confined space fan.. Dimension - 300 x 12 x 12 in.