Z-Flex Z-Vent 4" Steep Roof Flashing 7/12-12/12 . This flashing is for steep roofs with pitches greater than 45 degrees. A 4" Top Support / Storm Collar (2SVSLSF04) is also needed to make a weather seal with the steep roof flashing.
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.
