Designed to hold a 50 lb salt or mineral block.
 
Bottom of pan has inner ribs with square ends that lift the salt block, while outer bottom rim holds pan up off ground so moisture can escape through drain holes.
 
Made of impact-resistant DuraFlex plastic for long wear. 18.5" square x 5.25"H. Holds standard 50 lb mineral block or 10 quarts of dry material (will not hold water). Black.
 
Impact-resistant DuraFlex plastic for long wear
Moisture escapes through drain holes