Metal | | ?Durable Stable?Enhanced With An Additional Support Bar For Increased Stability, No Wobble. Constructed From Superior Quality Metal, Each Shelf Can Support Up To 50Lbs. | | ?Stackable Nested Design?The Product Includes Two Sets Of Cabinet Shelves That Can Be Stacked, Forming A Two-Tiered System For Storing Household Items Either Underneath, In Between, Or On Top Of The Shelves. Alternatively, They Can Be Nested To Generate Additional Storage Space, Catering To Your Varying Needs. | | ?Approximate Dimensions?Lower Shelf: 16.7''(L) X 8.9''(W) X 5.9''(H). Upper Shelf: 16.7''(L) X 9.2''(W) X 7.9''(H). | | ?Simple Assembly?Comprehensive Yet Straightforward Instructions Are Provided, Along With All Necessary Tools. An Additional Piece Of Each Screw Type Is Included, Ensuring A Smooth And Effortless Assembly Process. | | ?Broad Usage?These Are Ideal For Use As Storage Organizers In The Kitchen, Cabinet, Pantry, Cupboard, Bathroom, Wardrobe, And Any Other Ar.