gdl louvres catalogue

113T. 01457 861 538 F. 01457 866 010 � [email protected]

30mm Weather Louvres

DescriptionFor intake or extract air, the 45° blades are fixed at 30mm centresand have excellent integral rain defence features. Suitable forexternal mounting and designed for smaller louvre panels.

ConstructionFrom extruded aluminium sections, frame and blades 1.6mmthick. Hairline mitres mechanically held. Fitted as standard withrear galvanised steel bird mesh screen.

Size and WeightFrom 150 x 150 to 1200 x 1200, concealed rear mullions whenwidth exceeds 900mm.Weight approximately 11.5kg/m2.Free area 50%.

Product SpecificationSTATE QUANTITY, THE PRODUCT CODING AND THE SIZEWIDTH X HEIGHTe.g. 10 Qty. WG050+0C 500 x 300.


DescriptionFor intake or extract air, the 45° blades are fixed at 50mmcentres and have excellent integral rain defence features. Heavy duty construction allows large panels to be produced with unbroken blades.

Larger areas can be covered using multiple panel assemblieswhich will incorporate concealed rear mullions to give continuousblade appearance throughout.

ConstructionFrom extruded aluminium sections, frame 3.0mm thick, blades2.0mm thick. All frames to be of fully welded construction. Fitted as standard with rear galvanised steel bird mesh screen.

Size and WeightFrom 600 x 600 to 3000 x 2000 in a single unit. Larger sizes areavailable in multiple units. Concealed rear mullions when widthexceeds 1200mm.Average weight: 12.5kg/m2.Average free area: 48%.

Rain DefenceThe 50mm louvre system has been tested by BSRIA toEuropean standard EN13030:2002 and achieves Class C -(80 - 94.9 % effectiveness).

Airflow PerformanceTested to EN13030:2002 the following aerodynamic coefficient is achieved : Intake ~ 0.253

OptionsMatt black rear blanking panelsInsulated blanking panels (Thermal & Acoustic)Mitred cornersGuards: Insect screen (Fixed or Removable), SecuritySpecial shapes, Circular, triangular etc.

Product SpecificationSTATE QUANTITY, THE PRODUCT CODING AND THE SIZEWIDTH X HEIGHT e.g. 1 Qty. W5050+0C 2500 x 1500

50mm Single Bank Weather Louvres

T. 01457 861 538 F. 01457 866 010 � [email protected]

Size is expressed as ‘A’ x ‘B’ and relates to thenominal opening size into which the louvre is to be offered. A manufacturing size reductiontolerance is provided. Dimension ‘A’ (Width)should be stated first followed by dimension ‘B’ (Height).

* For louvres of 1200mm wide and over, heavyduty blade support mullions are incorporated tothe rear. Louvre depth increases to dimension (*).

W5050Flanged Frame

W5250Flanged Frame:

Multi-Panel with continuousblade appearance

W4250Recessed Frame:

Multi-Panel with continuousblade appearance

W4050Recessed Frame

W1050Reversed Angle Frame


i) Data is based upon louvres fitted with a rear bird guard / debris screen.With an insect screen fitted the free area will be reduced by approximately 15%.

ii) To minimise the risk of rain ingress, intake louvres should be selected against a max face velocity of 1.5M/s.iii) Pressure drops are total, given in Pascals, and based on air density of 1.2Kg/M3.iv)NC ratings shown are given for general guidance only.

Selection Procedurea) Air Volume (M3/s)

= Louvre Face Area (M2)Face Velocity (M/s)

b) Determine the air volume flow rate required to pass through the louvre (M3/s).c) Determine the maximum acceptable pressure drop (pa).d) From the adjacent chart look up face velocity (M/s) against maximum

pressure drop.e) Divide air volume by face velocity to give required louvre face area.

Selection Example

a) Size a W5 (50mm blade pitch) louvre to intake 2.0M3/s at 40 Pascals total pressure.

b) At 40 Pa, a ‘Face Velocity’ of 2.0M/s is given in the adjacent pressure drop graph; thus apply the formula as follows:

2.0 Air Volume (M3/s)= 1.0M2 Louvre Face Area

2.0 Face Velocity (M/s)c) Select a square or rectangular size to give the above face area,

e.g. 1100w. x 900h.

Louvre Screening

50mm & 75mm louvres can be manufactured to form visual screening enclosures for applications such as roof top plant installations or bin store compounds.Depending on the size and application the screen can be either fixed back to an existing building structure, or providing a suitable base is available, a steel support framework can be offered to provide a free standingenclosure. Doors can be incorporated where access is required to a fully enclosed area.Other options include acousticblanking, special shapes, openings for ductworkpenetrations etc.

Louvre screening is supplied inmultiple site assembled panels therefore there are virtually no size or shape constraints. Contact GDLtechnical sales to discuss specificapplications.


Technical Data 50mm Single Bank Weather Louvres


Multi-PanelNarrow LineFace Mullion1

Multi-PanelConcealedRear Mullion2

Dim ‘a’ (mm)W51W41W11W71W61

1010101414

Type

Dim ‘d’ (mm)W52W42W12W72W62

11811490118114

Type

50mm & 75mm Weather Louvres Multi-Panel Options


5WA4M 5WC4M

50mm Double Bank Weather Louvres

DescriptionFor intake or extract air, the 45° blades are fixed at 50mmcentres and arranged in double bank formation to offer higherlevels of rain defence effectiveness.

Heavy duty construction allows large panels to be produced with unbroken blades. Larger areas can be covered usingmultiple panel assemblies which will incorporate narrowlinevisible mullions.


Size and WeightFrom 600 x 600 to 3000 x 2000 in a single unit. Larger sizes areavailable in multiple units. Concealed rear mullions when widthexceeds 1200mm.Average weight: 25.0 kg/m2.Average free area: 48%.

Product SpecificationSTATE QUANTITY, THE PRODUCT CODING AND THE SIZE WIDTH X HEIGHTe.g. 1 Qty. 5WA4M+0C 2500 x 1800


57WA1M 57WC1M

DescriptionThis unique louvre offers both air intake and discharge within the same panel.

The warm discharged air is directed upwards at 45° avoidingshort cutting and cross contamination of the incoming supply air in the lower louvre section (see detail below).

Heavy duty construction allows large panels to be produced with unbroken blades.

Larger areas can be covered using multiple panel assemblieswhich will incorporate narrowline visible mullions.


Size and WeightFrom 600 x 600 to 3000 x 2000 in a single unit. Larger sizes are available in multiple units. Concealed rear mullions whenwidth exceeds 1200mm.Average weight: 19.75kg/m2.Average free area: 48%.

Product SpecificationSTATE QUANTITY, THE PRODUCT CODING AND THE SIZE WIDTH X HEIGHT AND DIM ‘C’ (VDT)e.g. 1 Qty. 57WA1M+0C 2500 x 1800 - 800 VDT

Combined Intake / Discharge Louvres


DescriptionFor intake or extract air, the 45° blades are fixed at 60mmcentres and have excellent integral rain defence features.Suitable for external mounting and is economically priced.

ConstructionFrom extruded aluminium sections, frame and blades 1.6mmthick. Hairline mitres mechanically held, fitted as standard withrear galvanised steel bird mesh screen.

Size and WeightFrom 300 x 300 up to 2500 x 1800. Concealed rear mullionswhen width exceeds 1200mm.Weight approximately 12kg/m2.Free area 48%.

Product SpecificationSTATE QUANTITY, THE PRODUCT CODING AND THE SIZEWIDTH X HEIGHTe.g. 10 Qty. WJ050+0C 1500 x 1000.

60mm Weather Louvres


DescriptionFor intake or extract air, the 45° blades are fixed at 75mmcentres and have excellent integral rain defence features. Heavy duty construction allows large panels to be produced with unbroken blades.

Larger areas can be covered using multiple panel assemblieswhich will incorporate concealed rear mullions to give continuousblade appearance throughout.


Size and WeightFrom 600 x 600 to 3500 x 3500 in a single unit. Larger sizes areavailable in multiple units. Concealed rear mullions when widthexceeds 1200mm.Average weight: 12.75kg/m2.Average free area: 48%.

Rain DefenceThe 75mm louvre system has been tested by BSRIA toEuropean standard EN13030:2002 and achieves Class C -(80 - 94.9 % effectiveness).

Airflow PerformanceTested to EN13030:2002 the following aerodynamic coefficient is achieved : Intake ~ 0.258

OptionsMatt black rear blanking panelsInsulated blanking panels (Thermal & Acoustic)Mitred cornersGuards: Insect screen (Fixed or Removable), SecuritySpecial shapes, Circular, triangular etc.

Product SpecificationSTATE QUANTITY, THE PRODUCT CODING AND THE SIZEWIDTH X HEIGHTe.g. 1 Qty. W7050+0C 3000 x 2000



W7050 / W7250Flanged Frame

W6050 / W6250Recessed Frame

Technical Datai) Data is based upon louvres fitted with a rear bird guard / debris screen.

With an insect screen fitted the free area will be reduced by approximately 15%.ii) To minimise the risk of rain ingress, intake louvres should be selected against a max face velocity of 1.5M/s.iii) Pressure drops are total, given in Pascals, and based on air density of 1.2Kg/M3.iv) NC ratings shown are given for general guidance only.


= Louvre Face Area (M2)Face Velocity (M/s)

b) Determine the air volume flow rate required to passthrough the louvre (M3/s).

c) Determine the maximum acceptable pressure drop (pa).d) From the adjacent chart look up face velocity (M/s)

against maximum pressure drop.e) Divide air volume by face velocity to give required louvre

face area.

Selection Examplea) Size a W7 (75mm blade pitch) louvre to exhaust 5.0M3/s

at 70 Pascals total pressure.b) At 70 Pa, a ‘Face Velocity’ of 2.75M/s is given in the

adjacent pressure drop graph; thus apply the formula asfollows:

5.0 Air Volume (M3/s)= 1.8M2 Louvre Face Area

2.75 Face Velocity (M/s)c) Select a square or rectangular size to give the above

fac e area, e.g. 1800w. x 1000h.

Size is expressed as ‘A’ x ‘B’ and relates to the nominalopening size into which the louvre is to be offered.A manufacturing size reduction tolerance is provided.Dimension ‘A’ (Width) should be stated first followed bydimension ‘B’ (Height).

Louvre blades are supported at a maximum of 1200mmcentres. Multi-Panel louvres and panels exceeding1200mm, incorporate heavy duty rear mullions and bladesupport clips to give continuous line appearance from the face. These are accommodated within the frameshown above and do not increase the depth dimension of the louvre.


Weather Louvre Fixing Options


Fixing style ‘+2’ is intended for the larger sized louvre panelwith either flanged framing or recess style frame. Speciallyformed ‘Tee bolts’ traverse within the track at the rear offrame. Bolts and brackets supplied but quantity at thefactory’s discretion.

Fixing style ‘+4’ is ideal for small to medium sized louvrepanels. Brackets are of 1.6mm galvanised sheet steelfolded but undrilled. Screws and bolts supplied by others.Brackets should be affixed direct to rear of louvre frame by self-tapping screws. The quantity of brackets is at thefactory’s discretion (minimum 4 No.)

Fixings by installers via positions indicated in situ. From the face of the louvre it is possible to fix between the louvre blades via the side frames.

Use code +0 as the 6th digit of the product coding.Final sealing by installers.

Pre-punched or drilledflange holes to takeNo.8 self-tappingscrews.

Hole position at thediscretion of thefactory, unless stated otherwise.

25mm or 28mm glazingbar welded around theperimeter of louvre frame.Suitable for double glazingframe applications.Available on louvre types‘W4’ and ‘W6’.Specify the overall glasssize which the louvre is to replace and glassthickness (25mm or28mm)

Louvre Doors


DescriptionFor intake or extract air, the louvre doors are available in 50mm pitch or 75mm pitch blades and in single or double leaf.Either with flanged frame or recessed frame, the louvre doorsare robustly manufactured with optional threshold details. Door furniture and ironmongery can generally be provided to suit specific needs and generally include optional mortice locks, door stays, panic push bars and handles.

ConstructionFrom extruded aluminium sections, frame 5.0mm thick, blades1.6mm thick. All frames are fully welded construction fitted asstandard with rear galvanised steel bird mesh screen.Euro profile cylinder mortice lock and stainless steel hinges with ball bearing washers are fitted as standard and plated brassshoot bolts are fitted as standard to one leaf of double doors.

Size and WeightGenerally to suit individual door openings or can be incorporatedwithin large louvre sections.Average weight: 20.0kg/m2.Average free area: 40%.

Rain DefenceThe 50mm & 75mm louvre systems have been tested by BSRIAto European standard EN13030:2002 and achieve Class C - (80 - 94.9 % effectiveness).

Airflow PerformanceTested to EN13030:2002 the following aerodynamic coefficient is achieved:50mm Intake ~ 0.253.75mm Intake ~ 0.258.

OptionsMatt black rear blanking panelsInsulated blanking panels (Thermal & Acoustic)Guards: Insect screen (Fixed or Removable)Panic bars, door stays, master keying, keypad locks, door closers, etc.

Product SpecificationSTATE QUANTITY, THE PRODUCT CODING AND THE SIZEWIDTH X HEIGHTe.g. 1 Qty. D7WC1FM+0C 1800 x 2100

Double Leaf Louvre Doors


D7WA1FM

D7WA1FM

D7WC1FM

D7WC1FM

Threshold Options

S7WA1FM

S7WA1FM

S7WC1FM

Recommended Fixing Options

Single Leaf Louvres Doors


S7WA1FM

DescriptionSingle or Double leaf doors can be incorporated within a louvresystem where access is required through the louvred area i.e.Plantrooms, Bin Compounds, Plant Enclosures etc.

ConstructionFrom extruded aluminium sections, frame 5.0mm thick, blades1.6mm thick. All frames are fully welded construction fitted asstandard with rear galvanised steel bird mesh screen.

Design / InstallationSingle or double leaf access doors can be incorporated at anypoint within a 50mm or 75mm louvre system.

Fixed louvre sections are supplied in panel kit form with the door section supplied as a complete unit.

All necessary bolts and bracketry are supplied for ease ofinstallation.

GDL engineers are available to discuss specific siterequirements and also carry out site surveys where required.

CAD manufacturing / installation drawings will be provided forclient approval. A qualified installation team is available.

Screen Louvre Doors


DescriptionFor supply or extract air, designed to offer weather protection toroof-top openings. Neat welded mitred corners and all weldedconcealed frame ensure maximum rigidity whilst an attractiveappearance is completed with its pitch roof construction.

ConstructionFrom extruded aluminium sections, frame 3.0mm - 5.0mm thick,with 1.6mm thick Blades. Aluminium roof 1.5mm thick, fullywelded construction.

Size and WeightThere are virtually no size constraints as large units areproduced in multiple sections.Average weight: 60.0kg/m3.Average free area: 50%.

OptionsExtended turned down base angleAccess doorsMatt black rear blanking panelsInsulated blanking panels (Thermal & Acoustic)Guards: Insect screen (Fixed or Removable)

Product SpecificationSTATE QUANTITY, THE PRODUCT CODING AND THE SIZEWIDTH X HEIGHTe.g. 1 Qty. 5WTB1M+0C 1800 x 900 x 600 H.

Turret / Penthouse Louvres

Rain DefenceThe 50mm & 75mm louvre systems have been tested byBSRIA to European standard EN13030:2002 and achieveClass C (80 - 94.9 % effectiveness). 3WT High PerformanceBlade Meets Class B.

Airflow PerformanceTested to EN13030:2002 the following aerodynamic coefficientis achieved :50mm Intake ~ 0.253.75mm Intake ~ 0.258.


Dim ‘p’ (mm)5075

Dim ‘d’ (mm)76102

Type5WTA7WTA

Multiple Section UnitsLarger sized penthouse louvres are supplied in multiple sections for site assembly.All connecting mullions and penthouse roof fixing points are pre-drilled for ease of assembly.Full bolt kit is provided for louvre assembly.

Where transport or access restrictions are a consideration, any sized penthouse unitcan be supplied in kit-form sectionsupon request.

Recommended Fixing Options

Style ‘A’ Base Style ‘B’ Base

Code ‘+0’ fixings (Standard)Fixings through base angle into kerb/upstand.

Code ‘+1’ fixingsInternal extended corner posts.Larger units also have intermediate extended postsfor additional fixings.

Base Style Options

Turret / Penthouse Louvres


‘Nominal Louvre Area’ Values in M2 For Turret Louvres 5WT & 7WT

5.28

2000 x 20002000 x 15002000 x 10001800 x 18001800 x 12001800 x 9001500 x 15001500 x 12501500 x 10001500 x 7501200 x 12001200 x 9001200 x 6001100 x 11001000 x 10001000 x 7501000 x 500900 x 900900 x 600900 x 450800 x 800800 x 600800 x 400750 x 750700 x 700700 x 500700 x 400600 x 600600 x 450600 x 300500 x 500400 x 400

Nom. OpeningSize A x B (mm)

0.36300 400 450 500 600 700 750 800 900 1000 1100 1200 1300 1400 1500

300 x 3000.480.6

0.630.720.660.720.84

0.480.640.8

0.720.840.960.880.961.121.2

0.961.121.28

0.90.810.951.080.991.081.261.351.081.261.441.221.351.621.35

1.00.9

1.051.21.11.21.41.51.21.41.6

1.351.51.81.5

1.752.02.21.82.12.4

2.252.5

2.753.02.73.0

1.21.081.261.441.321.441.681.8

1.441.681.921.621.8

2.161.82.12.4

2.642.162.522.882.73.03.33.6

3.243.6

4.323.6

1.962.1-

1.962.24

-2.1

2.522.1

2.452.8

3.082.522.943.363.153.53.854.2

3.784.2

5.044.2

2.25--

2.4

2.252.7

2.252.633.03.32.7

3.153.6

3.383.754.134.54.054.55.44.5

5.256.0

-2.56

--

2.88-

2.83.2

3.522.883.363.843.64.04.44.8

4.324.8

5.764.85.66.4

3.24-

3.153.6

3.963.243.784.324.054.54.955.4

4.865.4

6.485.46.37.2

3.54.04.4--

4.84.55.05.56.05.46.07.26.07.08.0

4.84--

-5.5

6.056.6

5.946.67.926.67.78.8

5.76-

6.06.67.2

6.487.2

8.647.28.4

7.8--

9.367.89.110.4

8.4--

10.088.49.811.2

9.0--

10.89.010.512.0

Height Dimensions (mm)

9.6

0.54

Unless specified otherwise, unit sizes shown in the shaded areas above and larger sizes will be manufactured in multiple sections for site assembly.

i) Data is based upon louvres fitted with a rear bird guard / debris screen. With an insect screen fitted the free area will be reduced by approximately 15%.

ii) Low, wide turret louvres perform more efficiently and offer better weather protection than tall narrow units.iii) To minimise the risk of rain ingress, intake louvres should be selected against a max face velocity of 1.5M/s.iv) Pressure drops are total, given in Pascals, and based on air density of 1.2Kg/M3.v) NC ratings shown are given for general guidance only.


Multiply x 1.2 = Nominal Louvre Area (M2)Face Velocity (M/s)

b) Determine the air volume flow rate required to pass through the louvre (M3/s).c) Determine the maximum acceptable pressure drop (pa).d) From the adjacent chart look up face velocity (M/s) against maximum

pressure drop.e) Divide air volume by face velocity & multiply x 1.2 to give required nominal

louvre area.

Selection Examplea) Size a 5WT1M Turret louvre to intake 6.0M3/s at the recommended face

velocity of 1.5M/s.b) Determine the pressure drop from the adjacent chart. At 1.5M/s a pressure

drop of 21pa is given. b) Apply the formula as follows:

6.0 Air Volume (M3/s)4 x 1.2 = 4.8M2 Nominal Louvre Area

1.5 Face Velocity (M/s)c) Select a square or rectangular base size and calculate an appropriate height

to give the above nominal louvre area; e.g. 1500 x 1500 x 800 H.

A range of sizes is given in the table below for general guidance. In between sizes and larger sized units than shown are also available.

Technical Data Turret / Penthouse Louvres


DescriptionFor intake or extract air, the 45° blades are fixed at 100mm centresand have excellent integral rain defence features. The louvre bladeis snapped into position via the sprung blade clip fitted onto therear mullions giving an attractive, continuous appearance.Excellent for large louvred areas.

ConstructionFrom extruded aluminium sections, mullions 3.0mm thick,flashing sections 2.0mm thick, blades 2.0mm thick. Louvres canbe supplied in kit format for site assembly or in manufacturedpanels to suit irregular shapes.

Size and WeightFrom 600 x 600 to see technical sales office.Average weight: 100mm louvre 16.5kg/m2.Average free area: 48%.

Rain DefenceThe louvre system has been tested by BSRIA to Europeanstandard EN13030:2002 and achieves Class C - (80 - 94.9 %effectiveness).

OptionsMatt black rear blanking panels.Insulated blanking panels (thermal and acoustic).Doors.Mitred corners.Guards: Insect screen (fixed or removable), security.Special shapes, circular, triangular etc.

Product SpecificationSTATE QUANTITY, THE PRODUCT CODING AND THE SIZEWIDTH X HEIGHTe.g. 1 Qty. 1WS59+2C 15000 x 3000

Site Assembly Clip-On Louvres


1WS59 (100mm) 7WS59 (75mm)

Site AssemblyClip-On Louvre System

* For louvres using heavy duty blade support mullions. Louvre depth increases to dimension (*).


1WS59 (100mm)

DescriptionFor supply or extract air, the Acoustic Louvre is designed toattenuate medium and high frequency noise breakout fromductwork and plantroom openings. Available in single bank or, for higher levels of attenuation, double bank.

ConstructionCases and blades formed from aluminium sheet. The attenuationmaterial is glass wool faced with perforated sheet.

Size and WeightFrom 500 x 500 to 1200 x 2000 in a single panel, large units areavailable in multiple units which bolt together in situ.Single bank 39kg/m2

Double bank 79kg/m2

Free area approximately 40%

Product SpecificationSTATE QUANTITY, THE PRODUCT CODING AND THE SIZEWIDTH X HEIGHTe.g. 10 Qty. AAW1M+1D 1000 x 800.

Acoustic Weather Louvres


Acoustic Louvre - Static Insertion Loss (dB)

Octave Band Frequency (Hz)

Single Louvre Bank (Standard)

Double Louvre Bank (Optional)

63

6

8

125

7

10

250

12

18

500

13

19

1K

14

21

2K

13

20

4K

13

18

8K

11

16

Face Velocity And Pressure Drop

M/sFace Velocity

PascalsSingle Bank

PascalsDouble Bank

0.50

0.75

1.00

1.25

1.50

1.75

2.00

2.25

2.50

2.75

3.00

2

4

6

9

14

17

23

29

35

43

50

2

4

7

10

15

19

25

31

39

47

56

Table .1.

Table .2.

Selection:Recommended Face Velocity is 1.5 - 2.0 M/sAir Volume / Face Velocity = M2 Area of Acoustic Louvre

Acoustic Louvres Fixing Options

The loose flange option can be used either as a fixingmethod as shown in figures A and B or cosmetically to mask irregularities in the builders work opening, or to perform both functions as depicted in Fig.C. In eitherevent the flange component is finished to match the unitand is furnished undrilled unless otherwise requested.For large sized units the flange is supplied in sections. To specify use fixing code +1 for the single flange optionand code +2 for the double arrangement. The flange gauge is dependant upon the unit size.

Technical Data Acoustic Louvres


Moveable Blade Louvres


DescriptionFor intake or extract air, the moveable blades, when fully open,are in the conventional 45° position and offer the same excellentweather protection as our standard louvres. The blades can bepositioned anywhere between open and fully closed to suit clientrequirements. Operation is through optional manual or motorisedcontrollers.

ConstructionFrom extruded aluminium sections, frame 3.0mm thick, blades2.0mm thick. All frames to be of fully welded construction. Plated fittings and nylon bearings as standard.

Size and WeightFrom 300 x 300 to 1200 x 2000 in a single unit. Visible facemullions are incorporated when width exceeds 1200mm to a maximum width of 2500mm. Larger sizes are available inmultiple units. Weight is approximately 22.5kg/m2.

Free area is 46% when fully open.

Product SpecificationSTATE QUANTITY, THE PRODUCT CODING AND THE SIZEWIDTH X HEIGHTe.g. 10 Qty. 5M7W-AM+2C 1200 X 500.

Rain DefenceThe moveable blade louvre system achieves class D (less than80% effectiveness) and therefore should only be considered forareas where water ingress can be contained and removed or isnot important.

5 M7W

1M7W

2M7W 3M7W

4M7W 5M7W

0 M7W Rear linkage only

1 M7W Simple rear lever device

2 M7W Window pole type operation

3 M7W Rear hand locking quadrant

4 M7W Remote cable actuation

Electric motor operation

Code .1. Hand OperationSimple rear hand lever furnished as standard. To specify use code ‘1’ as the first digit of product code.

Code .3. LockingQuadrantHand locking rear quadrant device.The required blade position can beselected and locked via a wing-nut. To specify use code ‘3’ as the firstdigit of product code.

Code .5. Electric MotorElectric motor operation (Belimoor similar) factory fitted. On / Off,modulating or Spring-Return. To specify use code ‘5’ as the first digit of product code andstate operating mode & voltage.

Code .2. Pole OperationOptional rear lever for windowpole type operation. To specifyuse code ‘2’ as the first digit ofproduct code.

Code .4. ‘Teleflex’OperationRemote winder and cableoperation giving smooth andpositive control from open throughto closed. To specify use code ‘4’as the first digit of product code.

Moveable Blade Louvres Actuation Options



DescriptionFor protection of ventilation or window openings havinghorizontal and vertical steel bars to prevent entry of personnel.Suitable for wall, window or duct mounting.

Construction From 40 x 40mm steel angle frame with 12 x 12mm steel bars at 100mm horizontal centres. All of fully welded construction.

Size and Weight From 200 x 200 in 50mm increments. Weight of grille approx18kg/m2. Free area Z1R50 70% Free area Z1S50 85%.

How to Specify STATE QUANTITY, THE PRODUCT CODING AND THE SIZEWIDTH X HEIGHT e.g. 10 Qty. Z1S50+2C 600 x 600.

Steel Security Bar Grille

Z1 40 x 40Steel Angle 0 None 2 Neck Fixings C PPC BS / RAL ColourR Recess

Mounting

S Surface FlangeMounting

12 x 12 SteelSecurity Bars5

1 Flange Holes

gdl louvres catalogue

Documents

intake louvres

sizewidth x heighte

insect screen

rear bird guard debris

product coding

incorporated tothe rear

smaller louvre panels

average free area