eFoam foam sheet offers: polyurethane PU & polyethylene PE & acoustic foam sheets . 0800-0439990 (82.5" x 78.7") at thickness: Quantity: Price: £ ROkaynstituted foam sheet - 6lb. Low st ntract seating foam in mixed lours, rOkaynstructed out of many little foam pieces all bonded together. Semi rigid packaging sheet.