The Z-Flex 2SVEEWCF0490 4" x 90° Z-Vent single wall elbow is designed for efficient venting in gas appliance applications, offering durability and reliable performance. Constructed from Category III stainless steel, this elbow is optimized for horizontal venting and is compatible with natural gas and liquid propane appliances, including high-efficiency furnaces and water heaters. It is equipped with gasketed connections and fusion-welded seams, which provide an airtight fit for effective venting without requiring additional sealants.