25ft Bag Black Rubberized Flexible Duct 5" R4 25' Bag (F)

The Quietflex? Black R4 5" Flex Duct has an extra heavy-duty, UV-inhibited, polyethylene-vapor barrier and complies with HUD standards for outdoor use with mobile homes.
Features
Weather-resistant packaging Easy-to-carry package: up to 10" strapped together to form pairs Quick clean-up and easy disposal Temperature range is -20