Designed to hold heavy files (up to 100 lbs.) without wobbling or flexing. Holds one Advantus Companion Portable File (AVT-TLF-2B, sold separately). Rails adjust to hold data binders and hanging files from 10 5/8" to 16 1/4" wide by 15" high. Sturdy lower rack for additional files, ledger books or reference material. Material(s): Steel; Overall Material Type: Metal; Color: Black; Color Family: Black.