

The 4" x 3' B-Vent Pipe (Part Number: 4M3) is designed for efficient venting of combustion gases. This durable aluminum flue with a galvanized casing measures 4" in diameter and 3' in length. Its hemmed casing and flue ensure safety, and the positive twist-lock connection with SureLock tab guarantees a secure fit. Compatible with L89-699 model, this B-Vent pipe is listed and tested to UL 441 standards.