36" X 73" Sturdy. Painted metal, metal shelves and cross-bars. Shelves are solid (not wire shelves). Shelves are screwed into the frame - so you can adjust them but once you've set them up, they are fixed. Mactac on shelves Can easily be screwed to the wall using existing holes (so they won't topple in an earthquake) I've been using them for pantry items.