The PRW plenum boxes connect the ductwork ends to swirl
diffusers in low- or medium-pressure ventilation systems. A
plenum box stabilizes the air supply, providing uniform air
flow rate before the air enters the diffuser.
The ductwork is connected to the plenum box inlet port at the side
or from above, depending on the product type. The inlet port can be
provided with a damper.The PRW plenum box is fitted to the NKSD-C,
NKSD-CB or NK-SWB supply diffuser with a rivet nut.