Linear Slot Diffusers

Model LSDLSD

LinearSlotDiffusersLSD600x300 LinearSlotDiffuers600x300 Dia20mm LinearSlotDiffuers600x300 Dia25mm2 LinearSlotDiffuers600x300 DiaLSDRC20 LinearSlotDiffuers600x300 DiaLSDRC25
LinearSlotDiffusersLSD600x300 LinearSlotDiffuers600x300 Dia20mm LinearSlotDiffuers600x300 Dia25mm2 LinearSlotDiffuers600x300 DiaLSDRC20 LinearSlotDiffuers600x300 DiaLSDRC25

The Polyaire Linear Slot Diffusers are an attractive alternative to the ceiling or high sidewall supply diffusers. Slot diffusers can be installed individually in set lengths or in a continuous line. They can also be installed in any type of ceiling application.

The modules are available with a 20mm or 25mm Slot with the number of slots ranging from 1 to 8 slots and are further available as fixed or removable core. (Fixed Core - Model LSD-FC, Removable Core – LSD-RC.

The air pattern control is adjustable from the diffuser face and is achieved by means of an adjustable pattern control with each slot, enabling a full 180º air pattern adjustment. The suggested volume control should be from the main duct run take-off, or from a butterfly damper fitted to the inlet of the cushion head box.

Construction is from extruded aluminium and the recommended maximum length for each section is 3 metres. Standard finish is powder coat white while other finishes are available to suit the interior and architectural design requirements.

 LinearSlotDiffuers600x300 Dia20mmLinearSlotDiffuers600x300 Dia25mm

Fixed Core Linear Model LSD 
Sizes Available/Dimensions
   20mm slot 25mm slot
 No of slots Neck size Face size Box size Neck size Face size Box size
 1 35mm 82mm 45mm 42mm 87mm 50mm
 2 69mm 116mm 79mm 79mm 126mm 89mm
 3 102mm 149mm 111mm 117mm 164mm 127mm
 4 135mm 182mm 145mm 155mm 207mm 165mm
 5 169mm 216mm 176mm 194mm 241mm 205mm
 6 202mm 249mm 212mm 232mm 270mm 241mm
 7 235mm 282mm 245mm 270mm 317mm 280mm
 8 269mm  316mm 279mm 309mm 356mm 318mm

 
LinearSlotDiffuers600x300 DiaLSDRC20

LinearSlotDiffuers600x300 DiaLSDRC25

Removable Core Linear Model LSD-RC
Sizes Available/Dimensions
   20mm slot 25mm slot
 No of slots Neck size Face size Box size Neck size Face size Box size
 1 47mm 92mm 55mm 52mm 97mm 60mm
 2 81mm 126mm 89mm 91mm 137mm 99mm
 3 114mm 159mm 123mm 129mm 176mm 137mm
 4 147mm 192mm 150mm 167mm 212mm 175mm
 5 181mm 226mm 189mm 205mm 251mm 214mm
 6 214mm 259mm 222mm 244mm 289mm 252mm
 7 247mm 292mm 255mm 282mm 327mm 290mm
 8 281mm 326mm 289mm 321mm 366mm 329mm


Slot Type Diffusers
Type LSD - Selection Data

Two Way Blow
 L/s per metre   2 slots wide 4 slots wide 6 slots wide 8 slots wide
31  Blow in m. 1.83 - - -
Pressure drop (Pa)  2.5 - - -
Suitable N/C level  less than 25 - - -
47   Blow in m.  2.74 - - -
Pressure drop (Pa)  5 - - -
Suitable N/C level  less than 25 - - -
62 Blow in m. 3.35 2.13 - -
Pressure drop (Pa) 10 2 - -
Suitable N/C level 25 less than 25 - -
78 Blow in m.   3.96  2.74 - -
Pressure drop (Pa)  20  2.5 - -
 Suitable N/C level 30  less than 25 - -
 93  Blow in m.  4.88  3.05  2.13  -
 Pressure drop (Pa)   2 2.5  -
 Suitable N/C level   32   less than 25   less than 25 -
108   Blow in m.  5.8 3.66 2.44  -
 Pressure drop (Pa)   32.4 7.5 2.5 -
  Suitable N/C level  35 less than 25 less than 25 -
124   Blow in m.   6.7 3.96 2.74  2.44 
Pressure drop (Pa) 40 10 5 2.5
Suitable N/C level  38 less than 25   less than 25  less than 25
139 Blow in m. - 4.57 3.05  2.44
Pressure drop (Pa) - 12.5 5 2.5
Suitable N/C level  - less than 25 less than 25 less than 25
155 Blow in m. - 4.88 3.66 2.74
Pressure drop (Pa)  - 17.4 7.5 2.5
Suitable N/C level
 - 25 less than 25  less than 25
170 Blow in m.  - 5.5 3.96 3.05
Pressure drop (Pa)   - 27.4 7.5 5
Suitable N/C level   - 30 25 less than 25 
186  Blow in m.  6.1  4.26  less than 25
Pressure drop (Pa)  34.9   10  5
Suitable N/C level   30   25  25
217  Blow in m.   4.88 3.96 
 Pressure drop (Pa)  -  -  12.5 7.5 
Suitable N/C level    30  25 
248  Blow in m.   - 5.5  4.57 
 Pressure drop (Pa)   -  17.4 10 
 Suitable N/C level    - 30  28 
279  Blow in m.  6.7  5.5 
Pressure drop (Pa)    22.4 12.5 
 Suitable N/C level    -  - 32  30 
310  Blow in m.  7.62  6.1 
Pressure drop (Pa)    - 25  14.9 
Suitable N/C level     - 35  32 


Slot Type Diffusers
Type LSD - Selection Data

One Way Blow
L/s per metre   1 slots wide 2 slots wide 3 slots wide 4 slots wide
16  Blow in m. 1.83  -  - -
 Pressure drop (Pa)
2.5  - - -
Suitable N/C level less than 25 - - -
31 Blow in m.   3.4 2.1  -
 Pressure drop (Pa)  10 10  -
Suitable N/C level less than 25 less than 25 - -
47 Blow in m.   4.9 3.0 2.1
  Pressure drop (Pa) 25 7.5 2.5
Suitable N/C level  25 less than 25   less than 25
62 Blow in m.   6.7 4.0 2.7 2.4
  Pressure drop (Pa) 40 10 5 2.5
Suitable N/C level  30 less than 25   less than 25   less than 25 
78 Blow in m.   -  5.2  3.7 2.7 
  Pressure drop (Pa) -  15  7.5 2.5 
 Suitable N/C level - less than 25  less than 25 less than 25 
93 Blow in m.   - 6.1 4.3 3.4
 Pressure drop (Pa)  - 22 10 5
Suitable N/C level  - 25 less than 25  less than 25 
108 Blow in m.   - 7.3 4.9 4.0
 Pressure drop (Pa)  - 30 12.5 7.5
Suitable N/C level  - 30 less than 25  less than 25
124  Blow in m.  - - 5.5 4.6
 Pressure drop (Pa)  - - 17.5 10
 Suitable N/C level - - 25 less than 25 
139 Blow in m.   - - 6.7 5.5
 Pressure drop (Pa)  - - 22 12.5 
Suitable N/C level - - 30 less than 25 
155 Blow in m.   - - 7.6 6.1
 Pressure drop (Pa)  - - 25 15
 Suitable N/C level - - 32 30