SMI Natural Oak Flat Files. All units are constructed of solid oak. Drawer sides are made from the highest quality solid wood drawer material. Drawer bottoms are tempered, smooth two sided hardboard. Drawer fronts are solid oak, bull-nosed four sides and fitted with solid brass architectural drawer pulls. All units are stackable and are made in three standard sizes for papers up to 24" x 36", 30" x 42". Available in Natural Oak or Medium Oak stain. All SMI Flat iles are MADE TO ORDER, therefore please allow 4-6 weeks for delivery.