Expandable Design: The Size Of The Expandable Closet Shelf Is 16.5"L X 11.8"W, It Can Expand From 16.5" To 31" Length To Fit Your Storage Needs. Note: Making Sure That The Size Of The Cabinet Is Correct | | No-Drilling: No Tools No Drilling Required. Wipe The Walls Of The Cabinets On Both Sides With A Rag To Keep The Surface Clean And Dry, You Can Mark With A Pencil To Determine Where To Install The Shelves. Press Them And Make Sure ThereS No Air Inside The Sticky Patch, Leave It For 12 Hours Before Use, Hang The Closet Shelves On Clear Adhesive Pads | | Closet Organizers And Storage Shelves Material: The Tension Shelf Are Made Of Heavy Duty Metal Iron,With A Load-Bearing Capacity Of Up To 50 Pounds. It Is Much More Sturdy And Durable Compared To Other Plastic Or Wire Shelves. The Waterproof And Rustproof Surface Makes It Easy To Clean | | Space Saving: Your Life Shouldn'T Be Disorganized, And Your Stuff Shouldn'T Be! Life Becomes Simple With This Perforated Board, Which Can.