What is the average shelf size
Depending on how big your room is, it depends on your own situation.I hope my answer will help you.
The supermarket shelves have a single double-sided length of 90CM 120CM with a height of 1.6 and 1.8 meters per side and 1, 8 meters and 2 meters The warehouse shelves are light 50CM wide and 1, 2 meters and 1.5 meters high Medium 60cm 2 meters long and 2 meters wide Heavy layer plate 2 meters X 0.8 meters x2 meters Beam is 2.7 meters
Supermarket shelves are 180 and 90.I hope my answer will help you.