Series 5000 - 43" and 36" Wide Side Tab Lateral Files Specifications / Locking Options / Interior Accessories / Warranty Series 5000 Side Tab Lateral Files, the ONLY fire resistant side tab filing product in existence, offer choices of two-, three- and four-drawer models in both 36" and 43" widths or stack individual units for your own configuration. So no matter what your document filing needs or where you plan to use it, the Series 5000 Side Tab Lateral File is sure to work for you. H.I.P.A.A COMPLIANT! HOLDS BOTH LETTER & LEGAL SIDE TAB FILES! STACKABLE! SIMPLE TO USE!