Vaillant Manhole connection set DN 80/125 - 303250

Set of DN 80/125 shaft connections - 303250 principle connections 303250 - concentric connection with flue gas duct. Duct diameter: 80/125 mm for boiler operation with room air intake or room air independent operation. Included in the set: triple inspection opening 80/125 mm for operating mode selection with air intake, from the room or room air independent with clamp, 0.5 m concentric extension pipe with clamp, 1 wall rosette, 1 bend DN 80 with bracket and clamp.