DD-1 is an aluminum grille with individually adjustable blades.
The DD-1 grille is designed for wall, ceiling or rectangular duct mounting and can be used for introduction or evacuation of air.
The grille is provided with a row of individually adjustable blades, parallel to the “L” (length) that allow the direction of the air jet.
For lengths ≥ 500 mm, the grille is provided with intermediate elements for stiffening.
As standard, the grille is manufactured with holes for screw mounting, except for the size 595×595 mm (external dimensions) for the false ceiling 600×600 mm.
The product is delivered with fixing screws.
If, on request, a mounting frame is required, then the grille is accessorized with fixing clips.
Ak [m²] - The free surface
Veff [m/s] - The effective velocity of air in the grille
∆Pt [Pa] - Pressure loss
X [m] - The length of the air jet at a speed of 0.25 m/s
NR [dB (A)] - Noise level without room attenuation
The data presented is for 100% open damper.
For more sizes see the Technical Data Sheet (bottom of the page).
The grille can be accessorized with plenum box (adapter), opposed blade damper, mounting frame or G4 air filter.
Adapter (plenum box)
The adapter is made of Z140 galvanized steel sheet and is equipped with suspension lugs.
On request, the plenum can be insulated with 6 mm thick elastomeric rubber.
Opposed blade damper (OBD)
The damper is provided with opposable blades and gears, it is mounted on the grille connection for adjusting the air flow. The large dimensions are made in several pieces according to the table.
Mounting frame (CC)
The mounting frame is used when a hidden, easy and fast installation of the grille is desired. Depending on the size required, it is made and delivered in one or more pieces.
Air filter G4 with frame (F-R)
G4 air filter with aluminum frame, used for air filtration and mounting on the grille connection. The large dimensions are made in several pieces.
As standard the grille is mounted by means of screws.
Optionally, for a hidden and easy assembly, a mounting frame can be used. The installation of the grille in the mounting frame is done by clamping.
Installation in wall or continuous ceiling with screws
Installation in wall or continuous ceiling with mounting frame