A3 paper size (ISO 216 standard):
Centimeters: 29.7 × 42 cm
Inches: 11.7 × 16.5 in

Orientation:
Portrait: 297 mm (W) × 420 mm (H)
Landscape: 420 mm (W) × 297 mm (H)

If you are interested in purchasing the original piece contact thingkrisna@gmail.com