The Vaillant 303903 Flue Extension Kit is an essential component for your Vaillant boiler, designed to ensure a seamless and secure mounting location on your wall. This extension kit, compatible with various Vaillant models, offers a reliable solution for connecting your heating system to your home's plumbing network, maintaining the integrity and efficiency of your water heater. Crafted with precision, this flue extension kit is engineered to work with boilers that operate at less than 100 W, guaranteeing a durable and performant addition to your heating infrastructure. Whether you are upgrading your existing system or installing a new one, this Vaillant accessory promises a straightforward installation and long-lasting reliability.
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