Approximate Measurements:
Bottom Frame: 64 cm x 64 cm x 8 cm (h)
Top Frame: 45 cm x 45 cm x 8 cm (h)

On their own, those two frames are valueless. They are to be placed on top of any 90 cm x 90 cm planter to create the tiered effect as pictured.
Their advantage is to allow for an optically pleasing plant arrangement and to add some extra soil volume and growing depth to the host planter.

Free shipping to SA metros, assembled.