How big are the shelves of small convenience stores?

Each group on the left side of the picture against the wall is 2m high, 0.9m long and 0.3m wide.

Each group of right double-sided islands is 1.55m high, 0.9m long and 0.65m wide.

This convenience store is almost thirty or forty square meters. It is generally recommended to choose these two sizes recommended by Runda Shelf.