Stack-on storage with four doors adds overhead storage and is designed for use with HON 10500 Series credenzas and desks. This series offers well-built, cost-effective wood furniture for a growing business. Square edges and full modesty panels give this series a clean, streamlined look. Durable, easy-care, thermal-fused laminate resists scratches and stains. Stack-on storage is equipped with self-closing, adjustable hinged doors and valance to hide your task light. All furniture units are also sold separately. Furniture is certified by SCS to be in compliance with specific, indoor, air-quality emission requirements and meets or exceeds ANSI/BIFMA and ISTA performance standards.