This dustbin base that I had refused to pay $300 for is something. It went on sale- I just got it. (well-the vac + dustbin went on sale so I returned my 2 day old S7 vac to get it). It is heavy, well-made, and full of air filtration devices. I thought it was going to be an overpriced piece of plastic with a fan and cheap filter. I apologize. Don't get me wrong- it still is priced pretty high..but I was impressed.