The 4" round 45° elbow vent pipe is used for many single wall pipe, horizontal vent exhaust applications. Elbows are used when a direction change or offset is required in installations. It can be used with natural gas or liquid propane, Category III appliances.
Z-Flex Z-Vent is rated AL29-4C and is approved for Category I (vertical only), II, III & IV applications and is designed for use with boilers, high efficiency gas and oil heaters and water heaters where cool flue gases are vented under pressure. Z-Vent contains a built-in, fail-safe gasket and locking band connection. No sealant is required.
