Banner Plotter Paper is usually most used in Roll form.  Thickness and point weight of papers could vary greatly mostly depending on the type of plotterprinter used as in Solvent, Eco Solvent, Inkjet Water Based (as in HP Desingjet) Also, presentation and outcome that is desired could change plotter-media one wished to Signage up the stadium with poster cadpaper that works with your BIG printer.  A large and loved church in Texas is a customer of ours that utilizes some of the Heavier Bond Inkjet Plotting paper as well as the Vinyl that is what American inkjet printers will print on. One can find these in 2 and 3 inch core here.