KBG Group

Air Distribution Products

Engineered aluminium air terminal units — linear slot diffusers, jet nozzle systems, and precision grilles for controlled air distribution in high-specification HVAC installations. Designed to ASHRAE 70 and EN 12238 standards.

Category

Grilles & Registers

Essential HVAC components designed to distribute conditioned air evenly. Available in multiple configurations for supply, return, and exhaust applications.

Linear Bar Grille Supply

Linear Bar Grille

Sleek Linear Airflow Distribution

Clean-line design for continuous ceiling or wall installations. Provides uniform air distribution with adjustable core patterns for directional control.

TypeSupply / Return
MaterialAluminum / GI
Continuous Run Aesthetic Adjustable
Single Deflection Grille Supply

Single Deflection Grille

One-Way Directional Airflow

Horizontal or vertical blades provide one-way air deflection. Ideal for sidewall supply applications with adjustable blade angles.

DeflectionSingle Direction
MountingWall / Ceiling / Duct
Sidewall Adjustable Blades
Double Deflection Grille Supply

Double Deflection Grille

Two-Way Directional Airflow Control

Front and rear blade sets allow precise two-way air pattern control—both horizontal and vertical deflection for maximum coverage.

DeflectionDual Direction (H + V)
ApplicationCommercial HVAC
Dual Control Precision Commercial
Slot Diffuser Supply

Slot Diffuser

Narrow Profile Ceiling Diffuser

Slim slot design integrates seamlessly with ceiling systems. Multiple slot configurations for continuous linear air distribution patterns.

Type1-slot / 2-slot / 4-slot
MountingCeiling / Plenum
Slim Profile Continuous Aesthetic
Egg Crate Grille Return

Egg Crate Grille

High Free-Area Return Air Grille

Open-cell lattice pattern provides maximum free area for return air applications. Low pressure drop with clean architectural appearance.

Free AreaHigh (up to 90%)
UseReturn / Exhaust
Max Airflow Low Drop Return Air
Floor Grill Floor

Floor Grill

Heavy-Duty Under-Floor Air Distribution

Load-bearing floor grilles for raised-floor HVAC systems. Heavy-duty construction supports foot traffic while distributing conditioned air.

TypeLoad-Bearing Floor Mount
ApplicationData Centers / Offices
Heavy Duty Raised Floor Data Centers
Curtain Grill Specialty

Curtain Grill

Flexible Air Curtain Grille

Designed for doorway and entrance air curtain systems. Creates an invisible air barrier preventing temperature exchange between zones.

TypeAir Curtain
ApplicationEntrances / Lobbies
Air Barrier Entrance
Curved Grill Specialty

Curved Grill

Custom Radius Architectural Grille

Custom-curved grille for non-standard architectural features like curved walls, columns, and soffits. Maintains airflow while matching building geometry.

ShapeCustom Radius
UseColumns / Curved Walls
Custom Shape Architectural
Category

Diffusers

Precision-engineered diffusers for uniform air distribution across large spaces. Minimizes noise and drafts while matching ceiling aesthetics.

Round Diffuser Ceiling

Round Diffuser

360° Radial Air Distribution

Circular pattern diffuser providing 360° radial airflow. Adjustable cone for variable throw and spread control.

Pattern360° Radial
FeatureAdjustable Cone
Radial Adjustable Low Noise
Square Diffuser Ceiling

Square Diffuser

4-Way Ceiling Supply Diffuser

4-way air distribution pattern ideal for grid ceiling systems. Clean square profile integrates with standard ceiling tiles.

Pattern4-Way / 3-Way / 2-Way
MountingGrid Ceiling / Surface
Grid Ceiling Multi-Way Standard
Jet Nozzle Long Throw

Jet Nozzle

Long-Range Directional Air Projection

High-velocity nozzle for long-throw applications in atriums, airports, and large open spaces. Adjustable ball joint for directional control.

ThrowLong Range (up to 20m+)
JointAdjustable Ball Joint
Airports Atriums High Velocity
Jet Diffuser Long Throw

Jet Diffuser

High-Induction Ceiling Diffuser

High-induction ceiling-mounted diffuser for medium to long throw applications. Combines jet nozzle performance with ceiling aesthetics.

TypeHigh Induction
MountingCeiling Mount
Medium Throw High Induction
Swirl Diffuser Ceiling

Swirl Diffuser

Rotating Airflow Pattern Diffuser

Creates a swirling air pattern for rapid temperature equalization. Excellent for VAV systems with high induction ratio.

PatternSwirl / Rotational
Best ForVAV Systems
Swirl VAV Rapid Mixing
Disc Valve Exhaust

Disc Valve (Exhaust)

Adjustable Exhaust Air Valve

Simple disc-type valve for exhaust and extraction applications. Adjustable disc controls airflow volume with minimal components.

FunctionExhaust / Extraction
ControlAdjustable Disc
Exhaust Simple Adjustable
Plaque Diffuser Ceiling

Plaque Diffuser

Flat-Face Ceiling Diffuser

Minimalist flat-face design for clean ceiling integration. Air distributes through perimeter gap for a coanda effect along the ceiling.

StyleFlat Face / Minimalist
EffectCoanda Ceiling Hugging
Minimalist Coanda Clean Look
Exhaust Air Diffuser Exhaust

Exhaust Air Diffuser

Ceiling-Mounted Return & Exhaust

Ceiling-mounted diffuser for return and exhaust air applications. Louvered face provides even air extraction with clean appearance.

TypeReturn / Exhaust
FaceLouvered
Return Air Ceiling Louvered
Category

Volume Dampers

Essential HVAC control components for precise airflow regulation in duct systems. Manual or motorized operation with BMS integration capability.

Butterfly Damper Control

Butterfly Damper

Round Duct Flow Control

Single-blade damper for round ducts. Simple and effective flow control mechanism with manual or motorized actuation options.

Duct TypeRound
OperationManual / Motorized
Round Duct Simple Effective
Opposed Blade Damper Control

Opposed Blade Damper

Precision Airflow Modulation

Multi-blade damper with opposing blade rotation for linear flow control. Preferred for mixing and modulating applications in VAV systems.

Blade TypeOpposed Multi-Blade
Best ForVAV / Mixing
Linear Control VAV Modulating
Volume Control Damper Control

Volume Control Damper

Parallel Blade Zone Balancing

Parallel blade configuration for zone balancing and shut-off applications. Standard choice for branch duct airflow regulation.

Blade TypeParallel Multi-Blade
UseBalancing / Shut-off
Zone Balance Shut-off Standard
Aerofoil Damper Premium

Aerofoil Damper

Low-Leakage Aerodynamic Blade Design

Aerodynamic blade profile minimizes pressure drop and air leakage. Premium choice for critical applications requiring tight shut-off and energy efficiency.

BladeAerofoil Profile
LeakageClass I Low Leakage
Low Leakage Aerodynamic Energy Efficient
Gas Tight Damper Critical

Gas Tight Damper

Class 1 Leakage Damper for Oil & Gas Industry

Engineered for absolute air and gas sealing in critical applications. Zero to near-zero leakage under high pressure, temperature, and hazardous conditions.

ConstructionGI, MS, SS (304/316)
SealsMetal-to-Metal / Inflatable
OperationMotorized / Pneumatic
Zero Leakage Oil & Gas Nuclear Custom Sizes
Fire Damper Safety

Fire Damper

Fire & Smoke Protection for HVAC Duct Systems

Automatically closes upon detecting high temperatures, sealing off duct openings to maintain fire compartmentalization. UL555 / IS 12433 equivalent.

RatingUp to 4 Hours Fire Rated
Eqyuvalent StandardsUL555 / IS 12433 / CBRI
MaterialGI, SS304, SS316
Auto Close UL555 BMS Ready Fusible Link
Non Return Damper Control

Non Return Damper

Restrict return airflow for HVAC Duct Systems

Automatically opens upon high airflow, Closes automatically when no air pressure restricting return air flow.

OperationGravity type
UseDucting Lines/Exhuust system
MaterialGI, SS304, SS316
Auto Close UL555 BMS Ready Fusible Link
Engineering Data

Technical Specifications

Standard parameters — all air terminal products manufactured to HVAC schedule requirements.

Primary MaterialAA 6063-T5 Aluminium / GI Sheet 0.6–1.2mm
Slot Width (Linear)15mm, 19mm, 25mm standard slots
Jet Nozzle ThrowUp to 30m (at 0.25 m/s terminal velocity)
Discharge AngleAdjustable ±30°
Pressure Drop15–80 Pa (design schedule specific)
Noise LevelNC 25–45 (application dependent)
Surface FinishPowder coat (RAL), Anodized, White primer
Custom SizingPer HVAC consultant schedule

Standards & Compliance

  • ASHRAE 70 Method of Testing for Room Air Diffusion
  • EN 12238 Air Terminal Devices — Aerodynamic Testing
  • IS 659 Safety Code for Air Conditioning
  • EN 13030 Air Performance Testing
  • ISO 9001:2015 Quality Management System

Applications by Sector

Metro Stations Airport Terminals Data Centres Hospitals Commercial Offices Shopping Malls Defense Facilities Naval Vessels

Need Air Terminal Units Manufactured to Your HVAC Schedule?

Our engineering team works from consultant schedules to produce grilles, diffusers, and nozzles in exactly the sizes, throw patterns, and finishes specified — with full shop drawing submittals.