Elevate your pellet grilling experience with our FCCUM Grill Smoke Stack, a perfect replacement for your Pit Boss, Traeger, Camp Chef, or other pellet grills. This smokestack chimney boasts a 3 1/2" diameter opening and 4 1/2" mounting bolt size, ensuring a snug fit for optimal performance. The chimney contains a gasket, black cap, flue pipe, screws, washers, and nuts for easy installation. Experience improved airflow, better temperature control, and increased smoke dwell time in your grill, enhancing the flavor of your smoked delicacies. This stainless steel smoke stack is not only durable but also adds a sleek touch to your grill. For any queries, feel free to contact us through Amazon Messenger. Note: Remember to close the hole on the back of the grill when installing.