Walter,
This looks like a new generation of the Tee Dee EZ Sluice which I still carry behind the seat in my truck for those times when opportunity arises. The biggest issue with any sluice is over running the material. Stick with the principle of Fluid Dynamics of 1' per second of material and it should do very well on high mesh gold, It works for me very well with any sluice system I use. If you would like to know more about Fluid Dynamics. listen to the On The Gold Podcast. https://www.buzzsprout.com/615199/1977019-5in5-friday-fluid-dynamics-with-kevin-bell

Yeah it looks the same to me just you can add on to sluice fox. I listened to podcast and it cleared up alot and was more specific than what I read .seen or heard and will definitely make use of it thanks for great info.