With this specialized product, your unit will remain stationary as you pull the Sliding Wire Shelf out to reach your stored items. *This product requires at least two fixed18"d x 24"w Chrome Wire Shelveson the unit for proper stability. Provides easy visibility and quick access to stored items Durable open-wire design maximizes airflow, reducing dust and dirt accumulation Truss in frame creates a 1" lip that prevents items from falling Glide track system rolls smoothly and evenly Adjusts to any desired height in 1" increments along posts Made for indoor use, dry storage only Use with 4Chrome Wire Shelving Poststo design custom storage To securely set or quickly remove shelves, tap their corners with arubber mallet. View ourWire Shelving Size Guidefor actual outer and inner dimensions to see if this shelf will fit with your existing system.