I have a new in box SGS Wave 40 SWG for sale. You can look at its brochure here and manual here. This is a SWG for up to 40,000 gallon pool which produces 1.35 lbs. per day. My original SWG (rated up to 20,000 gallons) could not keep up with the heat this summer, so my PB swapped my original for this unit. However, I purchased a different unit instead, so I have this brand new in-box unit available for sale. I see if for $560 and up on the internet. Will sale for $375 which includes shipping.