PBA is a plenum box for supply and extract air suitable for the AD, AR, AE, AL and AC aluminum grilles. It can also be fitted to the WLA-11 weather louver aluminum grilles.
The plenum box can be connected from the side or the back. The grilles are fixed into the plenum PBA by a special clips, used also for fixing the damper to the grilles.
The plenums PBA are made in galvanized steel and as option can have an outside or inside insulation. It equipped with fixing supports to facilitate the suspension in the pipeline.
- Can be used for both supply and extract air
- Easy-to-detach the grilles for access to the plenum
- Same box used for several type of grilles
- Special lip bend allow an easy clips mounting of all grilles model