NC1017 single pack filter for NC22 or Smartkleem, PT4i, Aiper or Grosvor GS100
There are only 2 kinds of filter bag that Smartpool's machine use. One kind of machine is marketed under Smartkleen, Nitro 22 or Nitro 31 or Kleen Machine sold in Costco years ago. These machines has 2 wheels at the front and 1 roller at the back.