Oversize A:
Internal Size: 24 x 36 inch (610 x 915 mm)
External Size: 38 x 50 inch (965 x 1270 mm)

Oversize B:
Internal Size: 24 x 64 inch (610 x 1625 mm)
External Size: 38 x 78 inch (965 x 1980 mm)

Oversize C:
Internal Size: 30 x 40 inch (760 x 1016 mm)
External Size: 44 x 54 inch (1120 x 1370 mm)