Exhaust Air Collector - for use on Attix 8 models to collect the exhaust air and direct outside of the room. Ideal for 100% clean rooms. Can also be used to blow dirt and debris out of hard to reach places. Includes 4 attachment screws and a seal ring. Only 1 kit left at this price. Nilfisk now shows a suggested list price of $133.16. I won't be restocking these when the kits are sold out.