The WBT4-1848-86 Jaken black wire add-on shelving unit measures 18" x 48" x 86" and is perfect for expanding starter or mobile shelving systems. Made from durable welded steel with a corrosion-resistant black powder-coat finish, it features tool-free assembly and adjustable shelf spacing. Ideal for warehouse racking, retail stockrooms, and backroom storage, this heavy-duty shelving solution enhances airflow and organization.