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Description:
Square grid structure ensures uniform airflow distribution and prevents air stagnation
Quiet operation with superior noise reduction performance
Suitable for both supply and return air in HVAC systems
Customizable large sizes to meet project requirements
Durable powder-coated aluminum construction with strong corrosion resistance
Improves cooling efficiency and reduces energy consumption
Ideal for factories, shopping malls, and office buildings
Compatible with volume control dampers and plenum boxes for flexible airflow regulation
Parameter:
| Product code | G-EDS |
Egg Crate Air Grille
The egg crate air grille features a uniform square-core grid design, making it an optimal solution for both supply and return air applications in HVAC systems. With high airflow capacity, low pressure drop, low noise, and clean aesthetics, this grille type is widely used in large-scale construction projects.
An egg crate air grille typically consists of three main components:
Frame:
Made of extruded aluminum with thickness from 0.8 – 1.2 mm, providing structural rigidity for ceiling installation.
Core Grid (Egg Crate):
The central section designed with uniform square cells (commonly 15×15 mm or 20×20 mm) to ensure effective airflow distribution.
Surface Coating:
Finished with electrostatic powder coating in white or custom colors to match interior design requirements.
Material:
Commonly made from solid aluminum, offering lightweight construction, corrosion resistance, and long-term durability in humid environments such as shopping malls, factories, and commercial buildings.
Egg crate grilles are preferred in high-airflow supply systems. The square-core design distributes air evenly, preventing strong drafts concentrated in one area and maintaining thermal balance.
Example:
In shopping malls, ceiling cassette AC units combined with egg crate grilles distribute cool air uniformly without causing discomfort to occupants.
Besides supply air, egg crate grilles are also widely used for return air, especially in systems requiring efficient removal of warm or humid air. When combined with volume control dampers, they optimize air circulation within the building.
Application Example:
Electronics manufacturing plants use egg crate grilles for return air to AHU systems to maintain stable pressure environments.
Suspended ceilings (gypsum ceiling) connected to flexible ducts or rectangular ducts
High wall positions in warehouses or technical rooms for heat extraction
Combined with VCD dampers or plenum boxes to improve airflow control and reduce noise
Installation position depends on the function: supply air, return air, or both.
Minimum spacing between grilles: ≥ 2 m to avoid airflow interference
Use with VCD damper or plenum box for airflow control and noise reduction
Recommended installation height: 2.5 – 3.2 m, depending on ceiling height
Following these standards ensures optimal system performance, energy efficiency, and long equipment lifespan.
High-quality egg crate grilles are powder-coated on aluminum or galvanized steel, providing:
Corrosion and rust resistance
Durability in humid or coastal environments
Long-lasting color stability (no yellowing over time)
Some manufacturers offer antibacterial coating suitable for hospitals, clean rooms, and laboratories.
Conference rooms (supply air): Medium size, stable airflow, low noise
Large factory return air: Larger grille with high free area
Clean rooms / laboratories: Antibacterial coating, easy to clean
Airflow selection should be based on AHU or fan capacity to ensure proper sizing.
Small gypsum ceiling → 300×300 or 400×400 mm
Large square duct → 600×600 or 800×800 mm
Wall / technical shaft → Rectangular grille such as 1000×500 mm
Incorrect sizing may reduce airflow performance and affect aesthetics.
G-sora provides high-quality egg crate air grille solutions for HVAC systems, including:
Products meeting technical standards with durable powder coating and corrosion resistance
Experience in large projects: factories, hotels, shopping malls
Professional MEP engineering team supporting from design to installation
Commitment to optimal solutions in quality, installation progress, and investment cost
Conclusion
Egg crate air grilles are a reliable choice for HVAC systems thanks to their flexible design, high airflow performance, and long-term durability. Understanding their construction, applications, and selection criteria helps optimize investment cost while ensuring long-term system efficiency.
