DD6025 Wall Grille 600x250mm – Wall Grilles – GWDD6025

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⚠️ Important Compatibility Notice

Please double-check the required specifications with your qualified technician or installer prior to ordering. Due to the technical nature of this product, incorrect orders cannot be exchanged, replaced, or refunded. Thank you for your understanding.

Professional HVAC Component: DD6025 Wall Grille 600x250mm

You are viewing the DD6025 Wall Grille 600x250mm (SKU: GWDD6025). A professional-grade component from the Wall Grilles series, engineered for New Zealand’s residential and commercial ventilation systems. Sourced directly from our trade supply chain for NZ Depot.

⚠️

Technical Verification Required

Ventilation components require precise sizing. Please verify that this GWDD6025 model matches your system’s diameter and connection type (e.g., Big End vs Small End) before ordering.

Key Specs:
Category: Wall Grilles
Type: Wall grille

Product Specifications

The GWDD6025 Aluminium Double Deflection Grille is designed for use in cooling, heating, and ventilation systems. It provides precise directional airflow control through individually adjustable blades and includes a removable core for easy installation, cleaning, and access to dampers. Constructed from durable aluminium, the grille offers long-lasting performance and a professional appearance suitable for a wide range of HVAC applications.

Application

Suitable for both supply and return air in residential, commercial, and industrial HVAC systems. Ideal for situations requiring adjustable airflow direction and straightforward maintenance. Mullions are fitted to grilles where blade lengths exceed 800 mm to ensure rigidity and airflow consistency.

Features / Benefits

  • Suitable for cooling, heating, and ventilation applications
  • Individually adjustable blades for precise directional airflow control
  • Removable core for easy installation, cleaning, and damper access
  • Mullions fitted to grilles with blade lengths exceeding 800 mm
  • Durable aluminium construction for corrosion resistance and longevity
  • Available in a wide range of sizes to suit most system designs

 

The table below gives the minimum height for a flat ceiling for satisfactory performance, base on the register being mounted between 300 and 600 mm below the ceiling for a range of flows between 3 and 20 metres

Output Velocity (m/s) Minimum Ceiling Height in Metres
3 4.5 6 7.5 9 10.5 12 15 18
2.0 2.4 2.7 3.0 3.3 3.7 4.0 4.3 4.6 4.9
2.5 2.4 2.7 3.0 3.0 3.3 3.7 4.0 4.3 4.6
3.0 2.4 2.7 2.7 3.0 3.3 3.7 4.0 4.3 4.6
4.0 2.4 2.7 2.7 3.0 3.3 3.3 3.7 4.0 4.3
5.0 2.1 2.4 2.4 2.7 3.0 3.0 3.3 3.7 4.0
6.0 2.1 2.4 2.4 2.7 3.0 3.0 3.3 3.3 3.7
7.0 1.8 2.1 2.4 2.7 2.7 3.0 3.0 3.3 3.3
8.0 1.8 1.8 2.1 2.4 2.4 2.7 2.7 3.0 3.0
  Throw Range in Metres

Table 1.

The above figures are for straight blow and 22.5 degrees

For 45 degrees vane setting, deduct 300 mm from ceiling height

 

Outlet Velocity (m/s) Noise Rating (NR) Typical Applications
2.5 25 – 30 Bedroom, Auditioriums
3.7 35 – 40 Private Office
5.0 40 – 45 General Office
7.5 50 – 60 Light Industrial

Table 2.

Design NR Values bases on AIRAH DA2, Noise Control

 

Air Volume (L/s) Register Size 600 x 250
Vane Setting 0? 22.5? 45?
100 Throw (m) 3.5 2.5 2.1
Velocity (m/s) 0.9 1.1 1.3
Static Pressure (Pa)

Additional information

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