Omnitech - Model OAD12R -Flexible Duct, Clear, Fiber and Wire Reinforced, 12` dia x 25`

Flexible duct can be used to connect the OmniAire HEPA negative air machine to the containment by attaching it to the intake manifold or to remove air from the containment by attaching it to the exhaust ring on the OmniAire HEPA negative air machine.