CFM calculation grille, custom size air vent, OEM grille supplier, air balancing damper, filter frame return air, HVAC distributor

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PRODUCT CLASSIFICATION

双层百叶风口9
双层百叶风口10
双层百叶风口细节1
双层百叶风口11
双层百叶风口9
双层百叶风口10
双层百叶风口细节1
双层百叶风口11

How to Choose the Right Aluminum Double Deflection Grille for Your HVAC Project

PRODUCT DESCRIPTION:
  1. True Double Deflection Blade Design — Two rows of independently adjustable blades (horizontal front + vertical rear) deliver 4-way directional airflow, giving occupants full control over air direction and eliminating cold drafts in offices, lobbies and meeting rooms.

  2. 6063-T5 Extruded Aluminum Frame — Premium aluminum alloy profile with uniform wall thickness, lightweight yet rigid, anti-rust and corrosion resistant; no deformation under long-term high-velocity airflow pressure.

  3. Independent 0°–90° Blade Adjustment — Each blade row adjusts smoothly and independently, allowing precise air balancing and longer air throw compared with single deflection grilles.

  4. Slim Face + Hidden Fixing Clips — Reinforced slim frame with hidden mounting clips leaves no visible screws, delivering a clean, flush ceiling or wall appearance for high-end commercial projects.

  5. Electrostatic Powder Coated Finish — Uniform matte white RAL9016 coating, 60–80 μm thickness, anti-yellowing, anti-scratch and UV resistant; over 200 custom RAL colors available for brand-matched projects.

  6. Optional Opposed Blade Damper (OBD) — Built-in rear opposed blade damper enables on-site CFM balancing per branch duct, ensuring whole-HVAC system comfort and energy efficiency.

  7. Optional Filter Frame & G4 Pre-filter — Removable filter frame accepts washable G4 synthetic pre-filter, improving indoor air quality in hospitals, labs, clean rooms and residential living spaces.

  8. Optional Insulated Plenum Box — Matched insulated plenum box reduces duct-borne noise and air leakage, with flexible duct connection for plug-and-play installation.

  9. T-Bar Ceiling & Sidewall Dual Mounting — Compatible with standard 600×600, 625×625, 600×1200 suspended ceiling grids; works as both ceiling supply outlet and sidewall return air vent.

  10. Removable Inner Core — Inner blade core detaches easily for duct cleaning, filter replacement and maintenance without removing the frame from the wall or ceiling.


Product Details

 Size and Airflow (CFM)

Match the grille neck size to the duct and design airflow. As a rule of thumb, face velocity at the grille should stay between 2–3 m/s for comfort applications. Standard opening sizes range from 200×200 mm up to 1200×600 mm; custom dimensions are available for project-specific requirements. Always check the free area (not just the frame size) when calculating CFM.

 Material: Aluminum vs Steel

  • Aluminum (6063-T5) — lighter, rust-proof, easier to install and recycle; preferred for ceiling supply air and humid environments.

  • Steel — heavier, lower unit cost but prone to rust; usually specified for rough industrial or external applications. Most commercial HVAC projects choose aluminum double deflection grilles for the balance of weight, corrosion resistance and clean appearance.


Product Data

  • Opposed Blade Damper (OBD): Adds airflow balancing on site; essential when multiple branches share one AHU.

  • Filter Frame + G4 Pre-filter: Recommended for return air applications and indoor air quality sensitive spaces (hospitals, labs).

  • Insect Screen: Required for fresh air intake and external wall vents.

  • Insulated Plenum Box: Reduces duct-borne noise and leakage; plug-and-play with flexible duct.

. Finish and Color

Standard matte white RAL9016 powder coating fits most commercial interiors. For hotel brand standards, luxury lobbies or residential projects, over 200 custom RAL colors are available. Always specify coating thickness (typically 60–80 μm) and salt-spray resistance on project specifications.


Inquiry Now

If you have any questions or needs about the product, please fill in the following form and we wll contact you as soon as possible.

+8615063068702

+8615063068702

ellin@cmdindustry.com

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