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Grilles, diffusers and louvers

Air terminal presentation: grilles, square, slot and round diffusers, jet nozzles, louvers and displacement units; Intertek measurements, calculated data, Frameless, coatings and selection.

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GRILLES · DIFFUSERS · LOUVERS

Grilles, diffusers and louvers

Extruded aluminium, powder-coated on an automated line at the Starduct factory, Hanoi. SAG, DAG, SKD and SLD are measured by Intertek (USA) to ASHRAE 70.

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Made in the Starduct factory, tested by independent laboratoriesMade in the Starduct factory, tested by independent laboratoriesMade in the Starduct factory, tested by independent laboratories

Made in Vietnam · Supplied to 17 markets

Made in the Starduct factory, tested by independent laboratories

AMCA · AHRI · ASHRAE · VISRAEMember of international and Vietnamese HVAC engineering associations
UL · FM · Intertek · IBST · VIBMRegular testing and certification with independent laboratories
5 patentsGranted in Vietnam
In-house aerodynamic test labPressure drop, airflow and leakage measured at the factory

“Vietnamese engineering can do it — and do it better.”

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Measured data, not estimates

GRILLES · DIFFUSERS · LOUVERS

Measured data, not estimates

SAG, DAG, SKD and SLD tested by Intertek (Cortland, New York) to ASHRAE 70-2006; other models and sizes are calculated from the measurements or from theory.

50grille, diffuser, louver and displacement models
4models measured by Intertek to ASHRAE 70-2006
4product groups: grilles, diffusers, louvers, displacement

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GRILLES

Wall and ceiling supply and return

Single deflection grille SAG Single deflection grille W 150–1200 × H 150–1200 mm Double deflection grille DAG Double deflection grille W 150–1200 × H 150–1200 mm Linear bar grille SCLB Linear bar grille L 200–3000 × H 45–315 mm Calculated – not tested Simple linear bar grille SCLB-LS Simple linear bar grille W 200–3000 × H 80–600 mm Calculated – not tested Egg-crate return grille SECG Egg-crate return grille W 200–1250 × H 150–650 mm Calculated – not tested 45° C-blade return grille SRAG 45° C-blade return grille W 250–1250 × H 150–650 mm Calculated – not tested Round C-blade return grille SRRAG Round C-blade return grille Ø 200–600 mm Calculated – not tested Perforated face grille SPG Perforated face grille W 200–1250 × H 200–1250 mm Calculated – not tested Z-blade fresh-air grille SWL Z-blade fresh-air grille W 200–1000 × H 200–1000 mm Calculated – not tested Spiral duct grille SAD Spiral duct grille W 254–1219 × H 76–305 mm Calculated – not tested

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SQUARE & SLOT DIFFUSERS

Square ceiling diffusers and seamless slots

Square 4-way ceiling diffuser SKD Square 4-way ceiling diffuser 300 / 450 / 600 mm One-piece square louver-face diffuser SKD-S One-piece square louver-face diffuser 300 × 300 (N 150 × 150) … 600 × 600 (N 450 × 450) Calculated – not tested Square two-position diffuser, 1 core SKD-K1 Square two-position diffuser, 1 core ØN 145 … ØN 345 Calculated – not tested Square two-position diffuser, 2 cores SKD-K2 Square two-position diffuser, 2 cores ØN 145 … ØN 345 Calculated – not tested Square two-position diffuser, 3 cores SKD-K3 Square two-position diffuser, 3 cores ØN 145 … ØN 345 Calculated – not tested Linear slot diffuser SLD Linear slot diffuser 1–6 × 20 / 32 mm FlowBar Frameless linear slot diffuser SFB FlowBar Frameless linear slot diffuser 1–4 × 30 mm · L 1200–6000 mm Calculated – not tested

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ROUND & SWIRL DIFFUSERS

Multi-cone, multi-ring and swirl

Round ceiling diffuser, 1 core SRD-1 Round ceiling diffuser, 1 core Ø300 / ØN 145 … Ø600 / ØN 395 Calculated – not tested Round ceiling diffuser, 2 cores SRD-2 Round ceiling diffuser, 2 cores 300 … 600 / Ø395 Test pending Round ceiling diffuser, 4 cores (Ø600 face) SRD-4 Round ceiling diffuser, 4 cores (Ø600 face) 600 / Ø345 … 600 / Ø395 Test pending Round-pattern diffuser in square panel, 1 core STR-1R Round-pattern diffuser in square panel, 1 core 600 × 600 … 600 × 600 Calculated – not tested Round-pattern diffuser in square panel, 2 cores STR-2R Round-pattern diffuser in square panel, 2 cores 600 × 600 / Ø145 … 600 × 600 / Ø295 Test pending Concentric-ring diffuser STRD Concentric-ring diffuser ØN 145 … ØN 345 Calculated – not tested Round swirl diffuser, adjustable vanes FK025 Round swirl diffuser, adjustable vanes ØN 200 … ØN 630 Calculated – not tested Round multi-cone diffuser FK028 Round multi-cone diffuser Ø300 / ØN Ø150 … Ø800 / ØN Ø600 Calculated – not tested Swirl diffuser, fixed vanes SWF Swirl diffuser, fixed vanes Ak 0.0088 … Ak 0.0295 Calculated – not tested Adjustable slot swirl diffuser SWS Adjustable slot swirl diffuser 300 × 8 … 600 × 48 Test pending

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JET NOZZLES & LOCAL OUTLETS

Long throw for large spaces, local supply

Adjustable ball jet diffuser FK026 Adjustable ball jet diffuser ØC 45 … ØC 323 Calculated – not tested Long-throw jet nozzle FK048 Long-throw jet nozzle ØC 60 … ØC 165 Calculated – not tested Spot jet diffuser FK037 Spot jet diffuser ØG 100 … ØG 225 Calculated – not tested Adjustable spot diffuser FK043 Adjustable spot diffuser ØG 38.1 … ØG 260.3 Calculated – not tested Disc valve diffuser STD Disc valve diffuser ØN 95 … ØN 245 Calculated – not tested Vent cap FK041 Vent cap D100 … D250 Test pending

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LOUVERS

Weather, sun-screen, acoustic and sand-trap louvers

K-blade rain-defence louver WWL-K K-blade rain-defence louver W 300–3000 × H 300–2400 mm Calculated – not tested Oval-blade sun-shade louver WWL-E Oval-blade sun-shade louver W 300–3000 × H 300–1500 mm Calculated – not tested V-blade sightproof louver WWL-V V-blade sightproof louver W 300–3000 × H 300–2400 mm Calculated – not tested Straight-blade acoustic louver SAL-F Straight-blade acoustic louver W 300–1500 × H 600–2400 mm Calculated – not tested V-blade acoustic louver SAL-V V-blade acoustic louver W 300–1500 × H 600–2400 mm Calculated – not tested Sand trap louver SSL Sand trap louver W 300–2000 × H 300–3200 mm Calculated – not tested Condenser discharge deflector SAC Condenser discharge deflector 4540 … 7070 Test pending

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DISPLACEMENT VENTILATION

Low-velocity clean air into the occupied zone

Wall-mounted, 1-way SDV-W1 Wall-mounted, 1-way 600–1500 × 600–1500 mm (15) Calculated – not tested Wall / pillar mounted, 3-way SDV-W3 Wall / pillar mounted, 3-way 600–1500 × 600–1500 mm (15) Calculated – not tested Corner quarter-cylinder, 90° SDV-K Corner quarter-cylinder, 90° Ø600–1000 × 900–1800 mm (11) Calculated – not tested Half-round wall unit, 180° SDV-HR Half-round wall unit, 180° Ø400–600 × 900–1800 mm (9) Calculated – not tested Free-standing cylinder, 360° SDV-R Free-standing cylinder, 360° Ø400–600 × 900–1800 mm (10) Calculated – not tested In-wall, flush face SDV-F In-wall, flush face 400–1200 × 600–1200 mm (11) Calculated – not tested Round floor outlet, 360° horizontal SDV-SR Round floor outlet, 360° horizontal NW 200–250 (2) Calculated – not tested Ceiling T-bar, downward SDV-T Ceiling T-bar, downward 300–600 × 600–1200 mm (4) Calculated – not tested Ceiling, heat / cool changeover SDV-TH Ceiling, heat / cool changeover 600 × 600–1200 mm (2) Calculated – not tested Ceiling, bell-shaped jet SDV-D Ceiling, bell-shaped jet NW 300–800 (5) Calculated – not tested

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MEASURED & CALCULATED

Each model states measured or calculated

4 Measured (test report)Samples measured by Intertek (USA) to ASHRAE 70-2006; other sizes calculated from the measurements. DAG · SAG · SKD · SLD
3 Cross-geometry from a tested model – not testedCross-calculated from the measurements of a tested model. SCLB · SCLB-LS · SKD-S
37 Calculated – not testedCalculated from aerodynamic theory: outlets on an ASHRAE 70 basis, louvers on an AMCA 500-L basis. SAD · SECG · SFB · SPG · SRAG · SRRAG · SWL · SAL-F · SAL-V · SSL · WWL-E · WWL-K · WWL-V · FK025 · FK026 · FK028 · FK037 · FK043 · FK048 · SKD-K1 · SKD-K2 · SKD-K3 · SRD-1 · STD · STR-1R · STRD · SWF · SDV-W1 · SDV-W3 · SDV-K · SDV-HR · SDV-R · SDV-F · SDV-SR · SDV-T · SDV-TH · SDV-D
6 Test pendingNo performance data published yet. SAC · FK041 · SRD-2 · SRD-4 · STR-2R · SWS

Intertek reports apply only to the samples tested; tables for other sizes are calculated by Starduct and not verified by Intertek.

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TESTING

Intertek reports to ASHRAE 70-2006

ANSI/ASHRAE 70-2006 · ADC 1062 GRD-84Characteristics tested: octave-band sound power and NC; airflow vs static pressure; area factor Ak; throw pattern. Isothermal air. NC = Lw − 10 dB room absorption.
Intertek reports SAG 104519155CRT-001a (2021)DAG 104519155CRT-001b (2021)SKD 104519155CRT-001cSLD 104519155CRT-001d
ISO 9001 · ISO 14001ISO 9001:2015 (VN-10161-QMS) · ISO 14001:2015 (VN-10038-EMS).

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Materials

MATERIALS & FINISH

Materials

01Aluminium frame and bladesFrame and blades: extruded aluminium A6063-T5, 1.0–1.2 mm
02Blades and corner keysOval blades 16.5 × 5 mm or teardrop blades, fixed with matching aluminium pins · Pressed aluminium corner keys against twist and paint cracking; stiffener for W > 600 mm
03Powder coatingHigh-grade Jotun powder coating on a 5-stage automated line; RAL 9010 matt white or any RAL code
0410-year colour durability warrantyIndoor installation, atmospheric corrosivity up to C2 per ISO 12944-2 (C1–C2).

Humid indoor, coastal or exterior: two premium Jotun systems, warranted by Jotun directly to the customer.

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Frameless: only the blades remain visible

Installed: SLD Frameless in a gypsum ceiling

FRAMELESS

Frameless: only the blades remain visible

01Frame skimmed into the ceilingSLD, SAG and DAG are available with a Frameless frame: the flange is a flat, perforated 1 mm aluminium strip. After installation it is taped and skimmed into the ceiling, leaving only the blades visible.
02Same performanceSame blade core and performance data as the standard model
03Colours and curvesWhite, black or any RAL; curved versions available
04InstallationHang the plenum independently on rods; do not load the ceiling board with it.

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SELECTING AN OUTLET

Selecting an outlet in five steps

01Airflow & NCSet the airflow per outlet and the room's target NC.
02Pick the sizeIn the performance table, pick the smallest size with NC ≤ target at the required airflow. Linear interpolation between columns is adequate.
03ThrowCheck throw against ASHRAE ADPI ratios for the room's characteristic length.
04Fan pressureAdd Pt to duct losses for fan sizing.
05CorrectionsCorrect where installation differs from the test: several outlets, partly closed OBD, cold supply, deflected blades.

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CONTACT

Select, submit and order

Size outlets in the quick selector, download catalogues and documents from the product pages, and send your list for a quotation.

Emailkinhdoanh@nsca.vn
Phone(+84) 90 323 2222
FactoryDan Phuong Industrial Cluster Phase 2, Dan Phuong Commune, Hanoi City, Vietnam

Product pages Quick selector Test reports & certificates Request a quote

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