Dimensions:

rectangular small
length: 500mm
width: 500mm
height: 50mm

rectangular big
length: 900mm
width: 900mm
height: 50mm

ngon
length: 800mm
width: 500mm
height: 50mm

ngon
length: 500mm
width: 760mm
height: 50mm

Vray and Corona versions included.

No unhide objects.

Preview rendered in v-Ray.