4 Z-Vent 90-degree Elbow

Z-Flex Z-Vent 4" x 90 Degree Elbow Stainless Steel Venting (2SVEEWCF0490). Z-Flex Z-Vent stainless steel vent pipe is ideal for the Bosch Therm 940ES / Bosch Therm 830ES / Bosch Therm 660EF / Bosch AquaStar 2700ES / Bosch AquaStar 2400ES / Bosch Evolution 500 tankless water heaters as well as the legacy Bosch Pro 715ES / Bosch Pro 635ES / Bosch AquaStar 2400E / Bosch AquaStar 250SX heaters as well as the Bosch AquaStar 240FX, AquaStar 125FX, Takagi TK1, TK2, TKD20, TKJR, TK1S, TM1 tankless water heaters. 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.