West folio Type G Expandable Folio's are strong and durable lightweight and acid-free art portfolios with a 200 sheet capacity. West folios keep artwork flat and protected while providing a wide choice of colours and a 30mm expanding gusset. This A4 size West folio is provided in Raspberry. Strong & durable. Made from Polypropylene with a 30mm expanding gusset. Lightweight & acid-free.