Fabric Ducting has many different names, from Air socks (or airsox) to textile diffusers, textile ducts, canvas ducts (they definitely are NOT made of canvas!), from textile ducting to air sleeves or even wind socks. We think Fabric Ducting & Diffusers is the most accurate term. Prihoda products are generally ducting as well as air distribution devices (or return devices) all at the same time. We offer positive pressure air distribution systems (fabric ducting & diffusers) as well as negative pressure ducting for exhaust or returning air to the unit from the space served.