The Domus Grille plenum is an integral part of Radial Duct System. It is designed to only work with Radial Duct parts and should not be fitted with any product outside of this range.
The Grille plenum provides equipment for two installation types when connecting from the duct plenum to the ceiling grille. A soil or flexible duct option, please see below drawing showing you both fixing options.
Simply connect the items as shown above and mount the grille in the ceiling. Using the clips provided, connect the push-fit radial duct (supplied separately) to the grille plenum.
For future reference, please take note of the commissioning point mounted inside the grille plenum. This will be used with the commissioning kit to balance your heat recovery system when fully installed.