Hos Pengalihan Udara Dapur Portable Aircond Heat Filter Ventilator Double Layer Aluminium Ducting Hose Ductwork System Features and Benefits - Non-insulated Ducting: 4" diameter x 3M/10M long air duct. - Non-insulated Ducting: 6" diameter x 3M/10M long air duct. - Non-insulated Ducting: 8" diameter x 10M long air duct. - Reinforced by a spiral wound wire to maintain it's cross sectional area. - Durable double coated aluminium sheath makes it strong and flexible. - Economical and easy to use. - Length : 3M/10M - Made of thick and durable aluminum. - Fire-resistance coating foil vent ducting. - Simple to keep clean. - Great for using a diversion vent at temperature range from 0 to 185+ F. - Spiral Ducting: Wide variety of applications in ductwork system, heat filters, medical rooms, air conditioner, allergy room, bathroom, greenhouse, tent grow room, air tight system and stove vent, circulating the atmosphere, air-conditioning the flow, removing heat from an enclosure.