DuraVent 6 in. D X 68 in. L Stainless Steel Double Wall Stove Pipe Color:Black Great educational tool for children 7033567 Great educational tool for children on your first turn start your train by placing a domino that matches the engine in the starter hub slot closest to you the matching side must be placed towards the engine no match draw a domino from the boneyard draw a match play it immediately still not a match keep it in your hand on subsequent turns add a playable domino to your train the mexican train or any open trains a domino is playable when it matches the end of the train youre adding to no playable domino Doors are smoothly braked and pulled into the open or closed position DVL improves stove performance by maintaining high flue gas temperatures for a strong DVL double wall stovepipe completes the venting system when used with one of DuraVents chimney products