Inner frame size:

Inside size 21X29.7CM(A4)

Inside size 30 x 30CM

Inside size 30 x 40CM

Inner size 30 x 42CM(A3)

Inside size 40 x 40CM

Inside size 40 x 50CM

Inside size 50 x 50CM

Inside size 50*70CM

Inside size 60 x 60CM

Inside size 60 x 80CM

Inside size 70 x 70CM

Inside size 70 x 100CM

Outer frame size:

Black walnut/cardboard without opening

Beech/cardboard without opening