• The Tri-Kennel is a back-to-back run system providing three runs in the same space as two! The Tri-Kennel combines a full height Sani-Kennel on one side with Mason Company's double stacked run system, the K-9 Cabins, on the other. Similar to the Sani-Kennel, the Tri-Kennel gives our clients the ultimate flexibility allowing you to pick between available Gate Choices, Panel Choices and Accessories! Follow the Tabs located below and select your own configuration.