Viessmann Gasket Flue Gas Dn 80 For Vitodens 200 W B2Ha/Wb2B Series Boilers. Compatible with Vitodens 200-W B2HA 45/60 Series Residential Wall-Mounted Gas-Fired Condensing Boilers Compatible with Vitodens 200-W WB2B 45/60 Series Residential Wall-Mounted Gas-Fired Condensing Boilers Any adjustments installations service or maintenance must be completed by a licensed professional heating contractor who is qualified to work with hot water boilers Check with manufacturer before ordering replacement parts to ensure a proper fit Give the manufacturer the 16-digit boiler serial number or the 12-digit ASME/NB serial number Package Contents: Viessmann 7826541 Gasket Flue Gas Dn 80 For Vitodens 200 W B2Ha/Wb2B Series Boilers Viessmann 7826541: Gasket Flue Gas Dn 80 For Vitodens 200 W B2Ha/Wb2B Series Boilers