00132562_0
SL-A/825×225


00132562_0

Type SL

Ventilation grilles, made of sheet steel, with individually adjustable, horizontal blades and diffuser-type front border – also for horizontal runs

Single ventilation grilles and horizontal run sections with droplet shaped blades

  • Nominal sizes 225 × 125 – 1225 × 525 mm and horizontal run sections
  • Volume flow rate range 23 – 2000 l/s or 83 – 7200 m³/h
  • Grille face made of sheet steel, powder-coated
  • Diffuser-type front border, 28 mm wide longitudinal section, 20 mm wide transverse section
  • Concealed screw fixing


Optional equipment and accessories

  • Grille face in RAL CLASSIC colours
  • Installation subframe
  • Installation subframe for fitting filter media
  • Attachments for volume flow rate balancing and air direction control

Application

Application

  • Ventilation grille of Type SL as supply air or extract air variant for comfort zones and industrial zones
  • Directed supply air discharge for mixed flow ventilation
  • Blades are adjustable to meet different local requirements
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –12 to +4 K
  • For installation in walls, sills and rectangular ducts

Special characteristics

  • Individually adjustable blades
  • Diffuser-type front border
  • Concealed screw fixing

Nominal sizes

Single grille

  • Nominal length: 225, 325, 425, 525, 625, 825, 1025, 1225 mm
  • Nominal height: 125, 225, 325, 425, 525 mm


Horizontal run section

  • Nominal length of end section: 950 – 1970 mm, intermediate dimensions in 60 mm increments
  • Nominal length of middle section: 2000 mm
  • Nominal height: 125, 225, 325 mm

Description

Variants

  • SL: Single grille
  • E-SL, M-SL: Horizontal run section

Parts and characteristics

  • Diffuser-type front border
  • Individually adjustable, horizontal blades
  • Factory fitted perimeter seal
  • Vertical centre mullion for nominal lengths over 625 mm

Attachments

  • AG, AS, D, DG: For volume flow rate balancing and for air direction control

Accessories

  • Installation subframe: For the fast and simple installation of ventilation grilles
  • Filter casing: Frame with filter element and spring clip fixing

Construction features

  • Asymmetrically supported blades
  • Front border without holes

Materials and surfaces

  • Border and blades made of galvanised sheet steel
  • Border and blades powder-coated RAL 9010, pure white
  • P1: Border and blades powder-coated, RAL CLASSIC colour

Standards and guidelines

  • Sound power level of the air-regenerated noise measured according to EN ISO 5135

Maintenance

  • Maintenance-free as construction and materials are not subject to wear
  • Inspection and cleaning to VDI 6022

Technical information

Function, Technical data, Quick sizing, Specification text, Order code

  • Function
  • Technical data
  • Quick sizing
  • Specification text
  • Order code
Schematic illustration of a ventilation grille with longitudinal blades
00151203_0
① Front border
② Longitudinal blades
③ Centre mullion


00151203_0
00205240_0
00150723_0
00150735_0
00151197_0
00150729_0
00150741_0
00150747_0
00150753_0
00151185_0
00151179_0

Functional description

Ventilation grilles are air terminal devices for the supply air and extract air of ventilation and air conditioning systems. They direct the supply air into the room. Ventilation grilles with adjustable blades allow for adapting the discharge direction to the local conditions. The result is a mixed flow ventilation in comfort zones and industrial zones, with good overall room ventilation.

Induction slows the airflow down, i.e. the airflow velocity decreases as the distance from the grille increases. The distance at which the airflow velocity reaches a certain defined value, e.g. 0.2 m/s, is called throw distance. The supply air jet from wall grilles that are installed near the ceiling achieves a larger throw distance than a free jet (from a grille that is not installed near the ceiling). Single grilles, groups of grilles and continuous horizontal runs all achieve different throw distances.

In cooling mode it is necessary to take account of the jet deviation towards the occupied zone, which increases as the supply air to room air temperature difference increases and the discharge velocity decreases. In heating mode the supply air jet deviates towards the ceiling. This has no negative effect on the airflow velocity in the occupied zone, but it may affect the complete ventilation of the room.

Nominal sizes

225 × 125 to 1225 × 525 mm

Horizontal run section

H: 125, 225, 325 mm

Minimum volume flow rate

23 – 685 l/s or 83 – 2466 m³/h

Maximum volume flow rate, with LWA max. 40 dB(A) without attachments

115 – 2000 l/s or 414 – 7200 m³/h

Supply air to room air temperature difference

–12 to +4 K

Volumen flow rates for single grille for supply air.


Geometric free area

H L [mm]
H 225 325 425 525 625 825 1025 1225
H Ageo
mm m²

125

0.015

0.022

0.029

0.036

0.044

0.058

0.072

0.087

225

0.044

0.059

0.074

0.089

0.117

0.147

0.176

325

 

0.096

0.126

0.156

0.177

0.221

0.266

425

 

 

 

 

0.178

0.236

0.296

0.355

525

 

 

 

 

 

 

0.370

0.445


Effective air discharge area (supply air)

H L [mm]
H 225 325 425 525 625 825 1025 1225
H Aeff
mm m²

125

0.014

0.021

0.029

0.036

0.043

0.057

0.072

0.086

225

0.043

0.057

0.072

0.086

0.114

0.142

0.172

325

0.086

0.108

0.129

0.172

0.214

0.256

425



0.172

0.228

0.285

0.342

525





0.355

0.427


Effective area of extract air grille

H L [mm]
H 225 325 425 525 625 825 1025 1225
H Aeff
mm m²

125

0.013

0.019

0.026

0.033

0.040

0.053

0.066

0.080

225

0.040

0.053

0.066

0.080

0.105

0.133

0.160

325

0.080

0.100

0.120

0.160

0.200

0.240

425



0.160

0.220

0.270

0.320

525





0.330

0.400


SL, volume flow rate ranges 00246695_0

× LWA = 40 dB(A) with unrestricted airflow+ LWA = 40 dB(A) with airflow restricted by 50 %

Sizing example

Given data

V = 335 l/s (1206 m3/h)

Ventilation grilles, made of steel, with adjustable blades

Maximum sound power level of 40 dB(A), with the airflow restricted by 50 %

Nominal height as low as possible

Quick sizing

Type SL or TR

Nominal sizes: 825 × 225, 525 × 325, 625 × 425

Selected: SL/825 × 225

Ventilation grilles, rectangular, made of sheet steel, for supply and extract air. Special design with diffuser-type front border. Preferably for wall and sill installation but also suitable for rectangular ducts.

Ready-to-install component which consists of a border and individually adjustable, horizontal blades.

Concealed screw fixing for installation into an installation subframe.

Sound power level of the air-regenerated noise measured according to EN ISO 5135.

Special characteristics

  • Individually adjustable blades
  • Diffuser-type front border
  • Concealed screw fixing

Materials and surfaces

  • Border and blades made of galvanised sheet steel
  • Border and blades powder-coated RAL 9010, pure white
  • P1: Border and blades powder-coated, RAL CLASSIC colour

Technical data

  • Nominal sizes: 225 × 125 to 1225 × 525 mm
  • Horizontal run section, height: 125 – 325 mm
  • Minimum volume flow rate (supply air): 23 – 685 l/s or 83 – 2466 m³/h
  • Maximum volume flow rate (supply air), at LWA max. 40 dB(A) without attachments: 115 – 2000 l/s or 414 – 7200 m³/h
  • Supply air to room air temperature difference: –12 to +4 K

Sizing data

  • V _______________________ [m³/h]
  • Δpt _______________________ [Pa]

Air-regenerated noise

  • LWA _______________________ [dB(A)]

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.

00135443_0

 Type
SL       Single grille

 Attachments
A       Without (grille face only)
AG       Damper unit, opposed action blades
AS       Hit and miss damper
D       Air direction control, blades installed at 90° to the front blades, independently adjustable
DG       D combined with AG

 Nominal size [mm]
       L × H

 

 Installation subframe
       No entry: none
M1       With

 Exposed surface
       No entry: powder-coated RAL 9010, pure white
P1       Powder-coated, specify RAL CLASSIC colour

       Gloss level
       RAL 9010 50 %
       RAL 9006 30 %
       All other RAL colours 70 %

00135443_0
00229927_0
00133649_0
00207112_0

Order example: SL-AG/825×225/M1

Attachments

Damper unit, opposed action blades

Nominal size

825 × 225 mm

Installation subframe

With

Exposed surface

Powder-coated RAL 9010, pure white


Order example: E-SL/1430×225

Section

End section

Attachments

None

Nominal size

1430 × 225 mm

Installation subframe

Without

Exposed surface

Powder-coated RAL 9010, pure white


Order example: SL-EF-AS/1025×125

Attachments

Hit and miss damper

Nominal size

1025 × 125 mm

Exposed surface

Powder-coated RAL 9010, pure white


 

Dimensions and weight, Product details

  • Dimensions and weight
  • Product details
SL, front border width 28 mm (L) and 20 mm (H)
00204886_0
L Nominal length Vertical centre mullion if L > 625 mm
H Nominal height


00204886_0
00120451_0...

The weight table shows the available nominal sizes

SL, single grille

H L [mm]
H 225 325 425 525 625 825 1025 1225
H m
mm kg

125

0.6

0.8

1.0

1.2

1.3

1.7

2.1

2.4

225

1.2

1.5

1.7

2.0

2.5

3.0

3.6

325

2.0

2.3

2.7

3.4

4.0

4.7

425



3.3

4.2

5.0

5.9

525





6.0

7.0

Weights apply to ventilation grilles without attachments


SL, horizontal run section

H Section
H E M
mm kg/m kg

125

2.0

4.0

225

3.0

6.0

325

4.0

8.0

Middle section M: 2000 mm

End section E: 950 – 2025 mm in increments of 1 mm

Weights apply to sections without attachments


Front border M1 – longitudinal section (L)
00119337_0.


00119337_0.
00119353_0..
00119366_0.

Installation examples, Installation details, Commissioning, Basic information and nomenclature

  • Installation examples
  • Installation details
  • Commissioning
  • Basic information and nomenclature
Wall installation 00153795_0

Nominal length over 625 mm: with vertical centre mullion

Ventilation grille with concealed screw fixing
00151408_0
① Installation subframe
② Concealed screw fixing
③ Ventilation grille


00151408_0
00205210_0

Installation and commissioning

  • Installation preferably in walls, sills and rectangular ducts
  • Installation with installation subframe is recommended


These are only schematic diagrams to illustrate installation details.

Volume flow rate balancing -*G
00152008_0

Attachments -AG, -DG and Types AGW, DGW

00152008_0
00152134_0

Volume flow rate balancing

When several ventilation grilles are installed on the same duct, it may be necessary to balance the volume flow rates.

  • AG: Damper unit with opposed action blades, adjustable, secured with a locking screw
  • AS: Damper unit with hit and miss damper, adjustable, secured with a locking screw

Air pattern

  • Adjustable blades: Set the air control blades individually or together and depending on the local conditions
  • D, DG: Air control blades, fitted at 90° to the front blades, can be adapted to the local conditions

Principal dimensions

L [mm]

Nominal length of the ventilation grille

H [mm]

Nominal height of the ventilation grille

m [kg]

Weight

Nomenclature

LWA [dB(A)]

Sound power level of the air-regenerated noise

V [m³/h] and [l/s]

Volume flow rate

Δpt [Pa]

Total differential pressure

lS [m]

Distance from single grille or horizontal run section (throw distance)

Downloads

product information

  • Print page Type SL

  • Product data sheet Type SL

    Product data sheet 2,1 MB pdf

operation manuals

  • Installation manual Lüftungsgitter

    IM_2019_06_A00000054451_Lüftungsgitter_V3_GB_en Installation manual 680 KB pdf

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We are here for you

Please specify your message and type of request.
Tel.: +44 (0)1842 754545 | Fax: +44 (0)1842 763051

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Your message to

Fields marked with an (*) are required fields.

Contact

Thank you for your message!

Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +44 (0)1842 754545 | Fax: +44 (0)1842 763051

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