Technical Specifications

Technical Specifications

Flexible Duct Sizing Guide

MAX RECOMMENDED AIR QUANTITY (l/s) FLEXIBLE DUCT DIA (mm)
44 l/S Ø 150
92 l/S Ø 200
170 l/S Ø 250
275 l/S Ø 300
385 l/S Ø 350
503 l/S Ø 400
636 l/S Ø 450
785 l/S Ø 500
950 l/S Ø 550

Streemline Diffuser Sizing

MODEL NO. NOMINAL SIZE (mm) MAX RECOMMENDED AIR QUANTITY (l/s) FLEXIBLE DUCT DIA (mm)
SL2WS15 280×140 44 l/S Ø 150
SL2WS20 280×140 92 l/S Ø 200
SL2WL20 360×180 92 l/S Ø 200
SL2WL25 360×180 170 l/S Ø 250
SL2WL30 360×180 275 l/S Ø 300
SL3020 280×280 92 l/S Ø 200
SL3025 280×280 170 l/S Ø 250
SL3030 280×280 275 l/S Ø 300
SL4030 360×360 275 l/S Ø 300
SL4035 360×360 385 l/S Ø 350
SL4040 360×360 503 l/S Ø 400
SL5440 540×360 503 l/S Ø 400
SL5445 540×360 636 l/S Ø 450
SL5450 540×360 785 l/S Ø 500
SL5455 540×360 950 l/S Ø 550

Silhouette Diffuser Sizing

MODEL NO. NOMINAL SIZE (mm) MAX RECOMMENDED AIR QUANTITY (l/s) FLEXIBLE DUCT DIA (mm)
ST30 280×280 92 l/S Ø 200
ST30 280×280 170 l/S Ø 250
ST30 280×280 275 l/S Ø 300
ST60 Half T Bar 92 l/S Ø 200
ST60 Half T Bar 170 l/S Ø 250
ST60 Half T Bar 275 l/S Ø 300
ST60 Half T Bar 385 l/S Ø 350
ST60 Half T Bar 503 l/S Ø 400

Sunline Diffuser Sizing (Discontinued)

MODEL NO. NOMINAL SIZE (mm) MAX RECOMMENDED AIR QUANTITY (l/s) FLEXIBLE DUCT DIA (mm)
SUN20 Ø 200 92 l/S Ø 200
SUN25 Ø 250 170 l/S Ø 250
SUN30 Ø 300 275 l/S Ø 300

Sunline Diffuser Sizing

MODEL NO. NOMINAL SIZE (mm) MAX RECOMMENDED AIR QUANTITY (l/s) FLEXIBLE DUCT DIA (mm)
SJ15 Ø 150 44 l/S Ø 150
SJ20 Ø 200 92 l/S Ø 200

Floorline Grille Sizing

MODEL NO. NOMINAL SIZE (mm) MAX RECOMMENDED AIR QUANTITY (l/s) FLEXIBLE DUCT DIA (mm)
FL15 310×100 44 l/S Ø 150
FL20 310×100 92 l/S Ø 200

Linear Elite Diffuser Sizing

MODEL NO. NOMINAL SIZE (mm) MAX RECOMMENDED AIR QUANTITY (l/s) FLEXIBLE DUCT DIA (mm)
LIN20 1200×100 92 l/S Ø 200
LIN25 1200×100 170 l/S Ø 250

Baby Linear Grille Diffuser Sizing

MODEL NO. NOMINAL SIZE (mm) MAX RECOMMENDED AIR QUANTITY (l/s) FLEXIBLE DUCT DIA (mm)
BLIN20 560×83 92 l/S Ø 200
BLIN25 560×83 150 l/S Ø 250

Purtech Return Air Grille

MODEL NO. NOMINAL SIZE (mm) MAX RECOMMENDED AIR QUANTITY (l/s) FLEXIBLE DUCT DIA (mm)
PUR9040 900×400 184 l/S 2 x Ø 200
PUR9040 900×400 340 l/S 2 x Ø 250
PUR9040 900×400 550 l/S 2 x Ø 300
PUR7555 750×550 636 l/S 1 x Ø 450
PUR1260 1200×600 770 l/S 2 x Ø 350
PUR1260 1200×600 1006 l/S 2 x Ø 400

Slimline Return Air Grille

MODEL NO. NOMINAL SIZE (mm) MAX RECOMMENDED AIR QUANTITY (l/s) FLEXIBLE DUCT DIA (mm)
HRAG 550×400 92 l/S Ø 200
HRAG 550×400 170 l/S Ø 250
HRAG 550×400 275 l/S Ø 300
HRAG 550×400 385 l/S Ø 350

Door grille Sizing

SIZE (mm) MAX RECOMMENDED AIR QUANTITY (l/s)
600×150 120 l/s
600×200 155 l/s
600×250 190 l/s
600×300 235 l/s
600×350 275 l/s
600×400 315 l/s
600×450 350 l/s
600×600 465 l/s

Grille Sizing

APPLICATION MAX RECOMMENDED VELOCITY (m/s)
Return air grille at high level 1.75
Return air grille at low level 1.50
Return air grille for low noise level 1.25
Wall registers 2.50
Fresh air grilles 1.50
Discharge louvres 1.50

Conversions

CONVERT TO MULTIPLE
Litres per second(l/s) Cubic feet per minute(cfm) l/s X 2.119
Cubic feet per minute(cfm) Litres per second (l/s) cfm X 0.4719
Hp (refrigeration) Watts (refrigeration) Hp X 2.595(nominal)
Ton (refrigeration) kW (refrigeration) Tons X 3.5168
BTU/hr Watts (refrigeration) BTU/hr X 0.293
Inches (in) Millimetres (mm) in X 25.4
Square inches(sq in) Square millimetres (mm2) sq in X 645.16
Square feet (sq ft) Square metres (m2) sq ft X 0.0929
Inches water (in H2O) Pascals (Pa) in water X 249
Pounds (lb) Kilograms (kg) lb X 0.45359