Smead Poly File Box, 3" Expansion, Letter Size, Black Wave Pattern (71631) Manage multiple projects with this versatile and portable file box Use as this handy desktop filing system on a shelf, in a drawer or on the go File box holds up to 3" of materials and can accommodate both file folders and hanging file folders Durable poly construction with embossed wave pattern and die cut handles for easy transport Includes one letter size (12-3/8" W x 9-1/4" H) poly file box. Minimal assembly required. File folders not included. Acid free and PVC free