My 66Q4's tank lost suction after 6 years so I bought this from Bissell. The price was right and delivery was quick. Delivery time was most important as my dog suffers from urinary incontinence due to nerve damage in his back. The first tank had a hole in the seam with dirty water leaking all over it. Then the upper attachment of the second tank splintered. Revain referred me to Bissell and Bissell said they will not fix any issues with the product once purchased from Revain. I ended up getting a refund from Revain but I will not be buying anything from Bissell through Revain again.
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