

The 4" B-Vent Adjustable Flashing (Part Number: 4MF) is designed to accommodate flat 5/12 roof pitches and fit various models, including L89-742. Featuring an aluminum flue with a galvanized casing, this flashing boasts a positive twist lock connection with a SureLock tab for added security. With a warning for cancer and reproductive harm, it meets UL 441 standards, ensuring safety. Installation is a breeze and can be done in minutes with common tools.