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Louvred Vent | Polycarbonate
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Louvred Vent | Polycarbonate

Polycarbonate louvred smoke vent delivering compliant smoke and heat extraction while allowing natural daylight into the building. The Roof Louvre Vent | Polycarbonate combines ventilation performance with improved internal light levels – ideal for environments where both safety and daylight matter.

System type

Natural
Mechanical
Access

Customisations available

Sizes
Curb options

Lead times

Stock: 1–5 working days
Made to order: 7–8 weeks

Dedicated Sertus delivery

On time. Pre-tested. Installation-ready.
Get a quoteDownload Datasheet

At a Glance

Certified to BS EN 12101-2

Multiwall polycarbonate blades

One-piece assembly

Integral lifting eyes

Opens to 90° in under 60 seconds

Approved Document B & Part L compliant

Key Features

  • Opens to 90° within 60 seconds for fast, compliant smoke extraction 

  • Multiwall polycarbonate blades allowing natural daylight into the building 

  • Integrated flashings and aerodynamic wind baffles supplied as standard 

  • Multiple actuators available depending on vent size 

  • Optional insulated base flange for thermal control and condensation reduction 

  • 24 V DC actuator with open/close end switches for safe operation 

  • One-piece construction with lifting eyes for fast roof-level handling and installation 

  • Modular linking option for large or custom configurations 

  • Optional roof access capability   

Read more

Sizes & Materials

  • Square or rectangular formats – standard and bespoke sizes available 

  • Size range: 966 × 500 mm to 3826 × 2400 mm 

  • Multiwall polycarbonate louvre blades 

  • Aluminium frame and support structure with thermally broken construction 

  • Standard finish: mill finish aluminium (internal and external) 

View size guide

Certifications

  • Certified to BS EN 12101-2 for smoke and heat ventilation 

  • Compliant with BS EN 1873 

  • Approved Document B & Part L compliant 

  • Impact resistance up to 1200 J 

  • Air permeability: Class 8 

  • Weather tightness: Pass 

  • Wind load resistance up to 1500 N 

  • Snow load classification: SL250–1000 N 

  • Resistance to heat: B300 

  • Low temperature operation: −25 °C 

  • Reliability testing to 10000 + 1000 cycles certified 

  • Dual purpose ventilation 

  • Not a fall hazard when open

View tech specs
Compare Sertus Roof Vents

Description

The Sertus Roof Louvred Vent | Polycarbonate is a high-performance roof-mounted smoke vent designed to extract smoke and hot gases while introducing natural daylight into the building. Read more

Tech Specs

Opening Performance

Opens to 90° within 60 seconds

Blade Type

Multiwall polycarbonate blades

Construction

Aluminium frame and support structure 

Fire Rating

B-s3, d0 / BROOF (t4) 

Certification

BS EN 12101-2 / EN 1873 compliant

Air Permeability

Class 8

Weather Tightness

Pass

Impact Resistance

Up to 1200 J

Wind Load

Up to 1500 N

Snow Load

SL 250–1000 N

Resistance to Heat

B300

Low Temperature Operation

-25 °C 

Thermal Performance

U-value range: 1.71–3.12 W/(m²·K)

Aerodynamic Free Area

Range: 0.29–6.06 m²

Free Area

Range: 0.35–7.62 m²

Protection Rating

IP40

Reliability

10000 + 1000 cycles certified

Construction Type

Roof-mounted one-piece assembly

Finish

Mill finish aluminium (internal and external)

Installation

Single-piece crane-lift installation 

Mounting Method

Roof-mounted with integrated flashings and baffles 

Options

Insulated base flange, modular linking, bird/insect mesh, end switches

Size Guide

ModelRoof Opening Size (L x W - mm)Aerodynamic Area (m²)
RLB-R 74.50746 x 5000.23
RLB-R 74.60746 x 6000.27
RLB-R 74.70746 x 7000.33
RLB-R 74.80746 x 8000.38
RLB-R 74.90746 x 9000.42
RLB-R 74.100746 x 10000.47
RLB-R 74.110746 x 11000.52
RLB-R 74.120746 x 12000.57
RLB-R 74.130746 x 13000.62
RLB-R 74.150746 x 14000.67
RLB-R 74.160746 x 16000.76
RLB-R 74.170746 x 17000.81
RLB-R 74.180746 x 18000.86
RLB-R 74.190746 x 19000.91
RLB-R 74.200746 x 20000.95
RLB-R 74.210746 x 21001.00
RLB-R 74.220746 x 22001.05
RLB-R 74.230746 x 23001.10
RLB-R 74.240746 x 24001.15
RLB-R 96.50966 x 5000.29
RLB-R 96.60966 x 6000.35
RLB-R 96.70966 x 7000.43
RLB-R 96.80966 x 8000.49
RLB-R 96.90966 x 9000.55
RLB-R 96.100966 x 10000.61
RLB-R 96.110966 x 11000.67
RLB-R 96.120966 x 12000.74
RLB-R 96.130966 x 13000.80
RLB-R 96.140966 x 14000.87
RLB-R 96.150966 x 15000.93
RLB-R 96.160966 x 16000.99
RLB-R 96.170966 x 17001.05
RLB-R 96.180966 x 18001.11
RLB-R 96.190966 x 19001.17
RLB-R 96.200966 x 20001.24
RLB-R 96.210966 x 21001.30
RLB-R 96.220966 x 22001.36
RLB-R 96.230966 x 23001.42
RLB-R 96.240966 x 24001.48
RLB-R 118.501186 x 5000.37
RLB-R 118.601186 x 6000.44
RLB-R 118.701186 x 7000.52
RLB-R 118.801186 x 8000.60
RLB-R 118.901186 x 9000.67
RLB-R 118.1001186 x 10000.76
RLB-R 118.1101186 x 11000.83
RLB-R 118.1201186 x 12000.91
RLB-R 118.1301186 x 13000.99
RLB-R 118.1401186 x 14001.06
RLB-R 118.1501186 x 15001.14
RLB-R 118.1601186 x 16001.21
RLB-R 118.1701186 x 17001.29
RLB-R 118.1801186 x 18001.39
RLB-R 118.1901186 x 19001.46
RLB-R 118.2001186 x 20001.54
RLB-R 118.2101186 x 21001.62
RLB-R 118.2201186 x 22001.70
RLB-R 118.2301186 x 23001.77
RLB-R 118.2401186 x 24001.85
RLB-R 140.501406 x 5000.44
RLB-R 140.601406 x 6000.52
RLB-R 140.701406 x 7000.62
RLB-R 140.801406 x 8000.71
RLB-R 140.901406 x 9000.80
RLB-R 140.1001406 x 10000.90
RLB-R 140.1101406 x 11000.99
RLB-R 140.1201406 x 12001.08
RLB-R 140.1301406 x 13001.17
RLB-R 140.1401406 x 14001.26
RLB-R 140.1501406 x 15001.37
RLB-R 140.1601406 x 16001.46
RLB-R 140.1701406 x 17001.55
RLB-R 140.1801406 x 18001.65
RLB-R 140.1901406 x 19001.74
RLB-R 140.2001406 x 20001.83
RLB-R 140.2101406 x 21001.92
RLB-R 140.2201406 x 22002.01
RLB-R 140.2301406 x 23002.10
RLB-R 140.2401406 x 24002.19
RLB-R 162.501626 x 5000.50
RLB-R 162.601626 x 6000.60
RLB-R 162.701626 x 7000.73
RLB-R 162.801626 x 8000.83
RLB-R 162.901626 x 9000.94
RLB-R 162.1001626 x 10001.04
RLB-R 162.1101626 x 11001.14
RLB-R 162.1201626 x 12001.27
RLB-R 162.1301626 x 13001.37
RLB-R 162.1401626 x 14001.48
RLB-R 162.1501626 x 15001.59
RLB-R 162.1601626 x 16001.69
RLB-R 162.1701626 x 17001.80
RLB-R 162.1801626 x 18001.90
RLB-R 162.1901626 x 19002.01
RLB-R 162.2001626 x 20002.11
RLB-R 162.2101626 x 21002.22
RLB-R 162.2201626 x 22002.33
RLB-R 162.2301626 x 23002.43
RLB-R 162.2401626 x 24002.54
RLB-R 184.501846 x 5000.57
RLB-R 184.601846 x 6000.69
RLB-R 184.701846 x 7000.83
RLB-R 184.801846 x 8000.95
RLB-R 184.901846 x 9001.06
RLB-R 184.1001846 x 10001.18
RLB-R 184.1101846 x 11001.30
RLB-R 184.1201846 x 12001.44
RLB-R 184.1301846 x 13001.56
RLB-R 184.1401846 x 14001.68
RLB-R 184.1501846 x 15001.80
RLB-R 184.1601846 x 16001.92
RLB-R 184.1701846 x 17002.04
RLB-R 184.1801846 x 18002.16
RLB-R 184.1901846 x 19002.28
RLB-R 184.2001846 x 20002.40
RLB-R 184.2101846 x 21002.56
RLB-R 184.2201846 x 22002.68
RLB-R 184.2301846 x 23002.80
RLB-R 184.2401846 x 24002.92
RLB-R 206.502066 x 5000.65
RLB-R 206.602066 x 6000.78
RLB-R 206.702066 x 7000.93
RLB-R 206.802066 x 8001.06
RLB-R 206.902066 x 9001.19
RLB-R 206.1002066 x 10001.34
RLB-R 206.1102066 x 11001.48
RLB-R 206.1202066 x 12001.61
RLB-R 206.1302066 x 13001.75
RLB-R 206.1402066 x 14001.88
RLB-R 206.1502066 x 15002.01
RLB-R 206.1602066 x 16002.15
RLB-R 206.1702066 x 17002.28
RLB-R 206.1802066 x 18002.45
RLB-R 206.1902066 x 19002.59
RLB-R 206.2002066 x 20002.73
RLB-R 206.2102066 x 21002.86
RLB-R 206.2202066 x 22003.00
RLB-R 206.2302066 x 23003.14
RLB-R 206.2402066 x 24003.27
RLB-R 228.502286 x 5000.72
RLB-R 228.602286 x 6000.86
RLB-R 228.702286 x 7001.02
RLB-R 228.802286 x 8001.17
RLB-R 228.902286 x 9001.32
RLB-R 228.1002286 x 10001.49
RLB-R 228.1102286 x 11001.63
RLB-R 228.1202286 x 12001.78
RLB-R 228.1302286 x 13001.93
RLB-R 228.1402286 x 14002.08
RLB-R 228.1502286 x 15002.23
RLB-R 228.1602286 x 16002.38
RLB-R 228.1702286 x 17002.53
RLB-R 228.1802286 x 18002.72
RLB-R 228.1902286 x 19002.87
RLB-R 228.2002286 x 20003.02
RLB-R 228.2102286 x 21003.17
RLB-R 228.2202286 x 22003.32
RLB-R 228.2302286 x 23003.47
RLB-R 228.2402286 x 24003.62
RLB-R 250.502506 x 5000.79
RLB-R 250.602506 x 6000.95
RLB-R 250.702506 x 7001.12
RLB-R 250.802506 x 8001.28
RLB-R 250.902506 x 9001.44
RLB-R 250.1002506 x 10001.63
RLB-R 250.1102506 x 11001.79
RLB-R 250.1202506 x 12001.95
RLB-R 250.1302506 x 13002.12
RLB-R 250.1402506 x 14002.28
RLB-R 250.1502506 x 15002.48
RLB-R 250.1602506 x 16002.65
RLB-R 250.1702506 x 17002.81
RLB-R 250.1802506 x 18002.98
RLB-R 250.1902506 x 19003.14
RLB-R 250.2002506 x 20003.31
RLB-R 250.2102506 x 21003.47
RLB-R 250.2202506 x 22003.64
RLB-R 250.2302506 x 23003.80
RLB-R 250.2402506 x 24003.97
RLB-R 272.502726 x 5000.86
RLB-R 272.602726 x 6001.03
RLB-R 272.702726 x 7001.22
RLB-R 272.802726 x 8001.40
RLB-R 272.902726 x 9001.57
RLB-R 272.1002726 x 10001.77
RLB-R 272.1102726 x 11001.95
RLB-R 272.1202726 x 12002.13
RLB-R 272.1302726 x 13002.30
RLB-R 272.1402726 x 14002.48
RLB-R 272.1502726 x 15002.70
RLB-R 272.1602726 x 16002.88
RLB-R 272.1702726 x 17003.06
RLB-R 272.1802726 x 18003.24
RLB-R 272.1902726 x 19003.42
RLB-R 272.2002726 x 20003.60
RLB-R 272.2102726 x 21003.78
RLB-R 272.2202726 x 22003.96
RLB-R 272.2302726 x 23004.14
RLB-R 272.2402726 x 24004.32
RLB-R 294.502946 x 5000.93
RLB-R 294.602946 x 6001.11
RLB-R 294.702946 x 7001.32
RLB-R 294.802946 x 8001.51
RLB-R 294.902946 x 9001.70
RLB-R 294.1002946 x 10001.91
RLB-R 294.1102946 x 11002.11
RLB-R 294.1202946 x 12002.30
RLB-R 294.1302946 x 13002.49
RLB-R 294.1402946 x 14002.68
RLB-R 294.1502946 x 15002.92
RLB-R 294.1602946 x 16003.11
RLB-R 294.1702946 x 17003.31
RLB-R 294.1802946 x 18003.50
RLB-R 294.1902946 x 19003.69
RLB-R 294.2002946 x 20003.89
RLB-R 294.2102946 x 21004.08
RLB-R 294.2202946 x 22004.28
RLB-R 294.2302946 x 23004.47
RLB-R 294.2402946 x 24004.67
RLB-R 316.503166 x 5001.00
RLB-R 316.603166 x 6001.20
RLB-R 316.703166 x 7001.42
RLB-R 316.803166 x 8001.62
RLB-R 316.903166 x 9001.82
RLB-R 316.1003166 x 10002.06
RLB-R 316.1103166 x 11002.26
RLB-R 316.1203166 x 12002.47
RLB-R 316.1303166 x 13002.68
RLB-R 316.1403166 x 14002.88
RLB-R 316.1503166 x 15003.13
RLB-R 316.1603166 x 16003.34
RLB-R 316.1703166 x 17003.55
RLB-R 316.1803166 x 18003.76
RLB-R 316.1903166 x 19003.97
RLB-R 316.2003166 x 20004.18
RLB-R 316.2103166 x 21004.39
RLB-R 316.2203166 x 22004.60
RLB-R 316.2303166 x 23004.81
RLB-R 316.2403166 x 24005.01
RLB-R 338.503386 x 5001.07
RLB-R 338.603386 x 6001.28
RLB-R 338.703386 x 7001.54
RLB-R 338.803386 x 8001.76
RLB-R 338.903386 x 9001.98
RLB-R 338.1003386 x 10002.20
RLB-R 338.1103386 x 11002.42
RLB-R 338.1203386 x 12002.68
RLB-R 338.1303386 x 13002.91
RLB-R 338.1403386 x 14003.13
RLB-R 338.1503386 x 15003.35
RLB-R 338.1603386 x 16003.58
RLB-R 338.1703386 x 17003.80
RLB-R 338.1803386 x 18004.02
RLB-R 338.1903386 x 19004.25
RLB-R 338.2003386 x 20004.47
RLB-R 338.2103386 x 21004.69
RLB-R 338.2203386 x 22004.92
RLB-R 338.2303386 x 23005.14
RLB-R 338.2403386 x 24005.36
RLB-R 360.503606 x 5001.14
RLB-R 360.603606 x 6001.36
RLB-R 360.703606 x 7001.64
RLB-R 360.803606 x 8001.88
RLB-R 360.903606 x 9002.11
RLB-R 360.1003606 x 10002.34
RLB-R 360.1103606 x 11002.58
RLB-R 360.1203606 x 12002.86
RLB-R 360.1303606 x 13003.09
RLB-R 360.1403606 x 14003.33
RLB-R 360.1503606 x 15003.57
RLB-R 360.1603606 x 16003.81
RLB-R 360.1703606 x 17004.05
RLB-R 360.1803606 x 18004.28
RLB-R 360.1903606 x 19004.52
RLB-R 360.2003606 x 20004.76
RLB-R 360.2103606 x 21005.00
RLB-R 360.2203606 x 22005.24
RLB-R 360.2303606 x 23005.47
RLB-R 360.2403606 x 24005.71
RLB-R 382.503826 x 5001.21
RLB-R 382.603826 x 6001.45
RLB-R 382.703826 x 7001.74
RLB-R 382.803826 x 8001.99
RLB-R 382.903826 x 9002.24
RLB-R 382.1003826 x 10002.49
RLB-R 382.1103826 x 11002.74
RLB-R 382.1203826 x 12003.03
RLB-R 382.1303826 x 13003.28
RLB-R 382.1403826 x 14003.54
RLB-R 382.1503826 x 15003.79
RLB-R 382.1603826 x 16004.04
RLB-R 382.1703826 x 17004.29
RLB-R 382.1803826 x 18004.55
RLB-R 382.1903826 x 19004.80
RLB-R 382.2003826 x 20005.05
RLB-R 382.2103826 x 21005.30
RLB-R 382.2203826 x 22005.56
RLB-R 382.2303826 x 23005.81
RLB-R 382.2403826 x 24006.06

Check Lead Times

Select from the options below:
Roof Opening Size (mm)
Aerodynamic Free Area (m²)
Free Area (m²)
Select product options to check stock status
Lead times apply to the standard specification only. This includes polycarbonate multiwall blades, an insulated base, an uninsulated flange, a mill finish, and a 220mm flange on all four sides. Variations to the standard specification may affect lead times.
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On site when we say - or we pay. Read More about our delivery guarantee.

Downloads

Complete Documentation Pack

Download a zip file containing all documents for this product.

  • Technical Data Sheet

  • Technical Data Sheet (U-Value Performance)

  • Declaration of Performance

  • Installation Guide

  • Operation & Maintenance Manual

  • Warranty

  • BIM Model

Download Pack

Technical Data Sheet

Detailed technical information in PDF format
Download PDF

Technical Data Sheet – U-Value Performance

Detailed U-Value information in PDF format
Download PDF

Declaration of Performance (DoP)

The Declaration of Performance is a key part of the Construction Products Regulation. It provides information on the performance of a product.
Download PDF

Installation Guide

Detailed installation instructions for the Louvred Vent | Polycarbonate
Download PDF

Operation & Maintenance Manual

How to use and care for your Louvred Vent | Polycarbonate
Download PDF

Warranty

Product warranty in PDF format
Download PDF

BIM Model

Version: Revit 2022
Download BIM

FAQ

Choose a category
Can I install a ladder on your smoke vent models?

We do not recommend installing permanent ladders on our RSL-R, RLB-R, or other smoke vent models, as they may impact the aerodynamic and free areas, potentially affecting performance.

Which version of EN 12101-2 are Sertus natural smoke vents CE marked to?

Sertus natural smoke vents are CE marked to EN 12101-2:2003. Although a 2017 version exists, it has not been ratified or published in the Official Journal of the European Union (OJEU), so manufacturers cannot CE mark to EN 12101-2:2017.

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Find the right system for your project

We don’t design or install full systems – we manufacture the certified products that form them. Choose a system type below to understand how it functions, where it is used, and which Sertus products are required for compliance.
Natural

Uses natural buoyancy of smoke and external airflow to extract heat and smoke from escape routes such as stairwells and corridors.

Learn more
Mechanical

Powered extraction using fan sets and control dampers to rapidly remove smoke from larger or complex buildings.

Learn more
Pressurisation

Maintains a positive air pressure in protected routes, preventing smoke ingress and ensuring clear escape paths.

Learn more
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