A4 paper size (ISO 216 standard):
Centimeters: 21 × 29.7 cm
Inches: 8.3 × 11.7 in

Orientation:
Portrait: 210 mm (W) × 297 mm (H)
Landscape: 297 mm (W) × 210 mm (H)

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