Nontackable back enclosure attaches to HON10500 Series 72" wide Stack-on Storage for a more elegant look & support for items that need to rest near the back of your worksurface. This series offers well-built, cost-effective wood furniture for a growing business. Back enclosure is made with laminate that matches your hutch. Durable, easy-care, thermal-fused laminate resists scratches & stains. Using the back enclosure still allows efficient cable management. When connected to the stack-on storage unit, the back enclosure features a full-width, 1-1/8" slot at the bottom for routing cords & reaching wall electrical outlets. All furniture units are sold separately. Furniture is certified by SCS to be in compliance with specific, indoor, air-quality emission requirements & meets or exceeds ANSI / BIFMA & ISTA performance standards.