This hard plastic mineral and salt block pan with holes in the bottom is the perfect tool to use for your horse and livestock. The bottom of the pan has inner ribs with square ends that lift the salt block and keep it out of rain water, while the outer bottom rim holds the pan up off the ground so moisture can escape through drain holes. Made of impact-resistant DuraFlex plastic for long wear. Measures 18.5 inch square by 5.25 inch high, holds a standard 50-lb. mineral block or 10 quarts(2.5 Gallons) of dry material. Save your mineral blocks with this feed pan!