Actually the system I use has 7 strips of 6 each (135). That's necessary for 135 as one easily has more than 36 exposure on a roll.

The product I use is Kaiser number 2510, 100 sheets. "Glassine" is Pergamino in Italian, Pergamin in German, and Papier cristal in French.

I also bought the specific binder, which protects from dust from all sides: when closed it is like a box. Probably the sheets would fit those large file archivers with a double cover.