A rigid, self-supporting PVC duct, Pliaduct has a ribbon-lock construction that lets users expand the diameter up to 25 percent by twisting it, using both hands, to fit nozzles, funnels or fittings. Suitable for spot cooling applications, the flame-retardant duct can be reshaped and spliced without tools. It stays in place once bent. Suited for both permanent and temporary installations, the duct is offered with plain ends in 2 to 6" dia. sizes in standard 25' lengths and 8 to 12" dia. sizes in 10' lengths. The chemically resistant duct withstands temperatures from -10 to 150°F (-23 to 66°C).