What Is the AG-DDA Double Deflection Grille?
The AIROTEK AG-DDA is a high-performance, double deflection adjustable grille designed for HVAC systems that demand precise, flexible airflow management. It features two independent sets of blades: an adjustable front set for direction control and a fixed rear set that provides secondary deflection — together enabling precise management of air pattern, throw distance, spread, rise, and drop.
As a leading HVAC grille and diffuser manufacturer in India, AIROTEK engineers the AG-DDA to integrate seamlessly into commercial, industrial, and hospitality air distribution systems — offering both aesthetic refinement and consistent functional performance.
Variant 1 — Front Vertical Blades
The front vertical adjustable blades govern horizontal spread and throw distance of the air stream. Ideal for wide-span spaces such as open-plan offices, corridors, and car parks where lateral air distribution is critical.
Variant 2 — Front Horizontal Blades (AG-DDA)
The front horizontal adjustable blades regulate vertical rise and drop of the air stream — typically directing cool air upward along the ceiling for efficient displacement ventilation in hotels, retail spaces, and commercial buildings.
Both configurations of the AG-DDA are available with an integral opposed-blade aluminium damper. The damper uses a screwdriver-slot operator for simple, tool-accessible volume control at the grille — eliminating the need for separate inline dampers in many installations.
AG-DDA Grille Specifications at a Glance
| Parameter | Specification |
|---|---|
| Model Number | AG-DDA |
| Frame Material | High-grade extruded aluminium with reinforced mitered corners |
| Face Border | 32 mm wide with 27 mm standard flange |
| Blade Spacing (Centers) | 20 mm |
| Blade Profile | Streamline extruded, friction-pivoted for tool-free adjustment |
| Damper Type | Integral opposed-blade, screwdriver slot operator |
| Damper Material | Aluminium, matt black finish |
| Standard Finish | RAL 9016 powder coat (Traffic White) |
| Alternative Finishes | Available on request (custom RAL colours, anodised) |
| Typical Applications | Commercial buildings, hotels, hospitals, car parks, industrial spaces |
Why Specifiers Choose the AG-DDA Double Deflection Grille
Heavy-Gauge Extruded Frame
Rigid aluminium frame with reinforced mitered corners ensures long-term structural integrity under continuous airflow pressure.
32 mm Face Border & 27 mm Flange
Generous flange dimensions allow easy surface mounting with clean architectural sightlines across various ceiling and wall installations.
20 mm Blade Spacing — High Effective Area
Close 20 mm centres maintain a high free-area ratio, minimising outlet velocity and pressure drop for quieter, energy-efficient operation.
Positive Blade Locking
Friction-pivoted blades hold any set deflection angle firmly under all operating velocity and pressure conditions — no drift, no re-adjustment.
Integral Opposed-Blade Damper
Built-in aluminium damper with screwdriver slot allows precise volume control at the grille — no additional accessories required.
Maximum System Flexibility
Recommended for systems requiring the highest degree of airflow adaptability — adjustable in both horizontal and vertical planes to meet changing space layouts.
Premium Aluminium Construction & Finish Options
Every AG-DDA grille is manufactured from high-quality extruded aluminium — chosen for its exceptional strength-to-weight ratio, corrosion resistance, and surface finishing versatility. The extrusion process ensures consistent blade geometry and tight dimensional tolerances across every unit.
Contact our team to discuss project-specific finish requirements, custom sizes, or special configurations for your next air distribution installation.
Where Is the AG-DDA Double Deflection Grille Used?
The AG-DDA's adjustable double deflection design makes it the preferred choice wherever precise airflow direction control is essential. Common applications include:
Trusted HVAC Grille & Diffuser Manufacturer in India
AEMP TECH PVT. LTD. (AIROTEK) has earned the confidence of leading consultants, contractors, and OEMs across India through consistent product quality, on-time delivery, and factory-direct technical support.
Years of Manufacturing
Proven HVAC grille expertise
Projects Delivered
Across India and exports
Aluminium Extrusion
No plastic, no compromise
Quotation Turnaround
Fast project support
Trusted by India's Leading HVAC & Infrastructure Companies
Our air distribution products are specified and installed by some of India's most respected engineering, construction, and facility management organisations.
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