Convent+ Retro-Fit Balanced Flue to Fan Flue Conversion Plate

If your boiler has an existing balanced flue a large square flue through to the outside it will rely on natural draft and is often called RS (or room sealed). Updating the flue system with a fan flue will make the boiler more efficient, but only requires a 100mm circular flue. This means youre often left with a large hole to brick up and make good. The solution is a retro-balanced flue plate that allows a secure, fire-sealed hole with an easy profile for the new 100mm fanned flue system.