Thicker is stronger, look for ¾” plywood (Consumer Reports, 2011.)
The Thickness of your cabinet shelves are an important factor. They are responsible for the rigidity and strength of your shelving. The thicker the shelf and the stronger the material, the less prone your shelves are to sagging and falling down.
Mei Kitchens Shelves are all adjustable and made of ¾” Veneered Plywood matching the light maple interior of your kitchen cabinets.