The popular stacking designs in use today prompted the rethinking of the old FINE-X® design. The FINE-X® II is very efficient in the self-cleaning department, but also keeps the dust and fines in the tray under the cage, not on the floor! The same sturdy, riveted construction and quality screen bottom offers you the best possible compromise between standard and screen-bottomed feeders. This feeder is 3.5" wide with 12 oz. capacity.