I have the same 20qt SS stock pot I use for all my brewing,including PB/PM BIAB. I have a nylon bag 18" X 32". But the kettle seems to need one 24" wide to stretch over the lip of the kettle. Plus the 32" length is way too much. 24" length would be better. My bag is by LD Carlson. The 24" X 24" bags I see on brewing sites don't say what the material is. I wonder if paint strainer bags in nylon from Home Depot or Lowe's come in a 24" X 24" size? Anybody ever seen/found one??