The perforated grille with circular holes is used to introduce or evacuate air.
The diffuser is used for mounting in a false suspended ceiling with dimensions of 600×600 mm.
It is recommended for installations with constant or variable air flow.
The external dimensions of the diffuser are 595×595 mm.
The circular perforations have a diameter of 5 mm.
The grille is connected to the ducting system via the plenum box.
1- Perforated grille PF
2- Plenum box (optional)
3- Suspension element (lug)
Ak [m²] - The free surface
Veff [m/s] – Air velocity in the grille
NR [dB (A)] - Noise level without room attenuation
X [m] - The length of the air jet at a speed of 0.2 m/s
∆Pt [Pa] - Pressure loss
The grille can be delivered with a connecting plenum box to the circular duct, with horizontal or vertical connection.
The plenum is provided with suspension elements (lugs) and bead roll on the spigot, for easy fixing of the flexible duct.
Optionally, a perforated damper can be mounted on the plenum connection to balance the air flow.
Adapter (plenum box)
The adapter is made of Z140 galvanized steel sheet and has 4 suspension lugs.
On request, the plenum can be insulated with 6 mm thick elastomeric rubber.
The perforated damper is mounted on the adapter spigot and has the role of balancing the air flow.
The diffuser is recommended for mounting in 600 x 600 mm false suspended ceiling.
Installation in T-bar suspended ceiling