The Vulcan V36ST4 is a high-quality backguard flue riser designed for efficient ventilation. This stub riser features a 4-inch diameter and measures 36 inches in height. Its non-overlapping design ensures a seamless fit, promoting optimal airflow and reducing the risk of blockages. Constructed for durability, the Vulcan V36ST4 is an essential component for enhancing the performance of your ventilation system.