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I-Rated Smoke Control Damper

A compact, installation-ready smoke control damper designed for both natural and mechanical systems. The Sertus I-Rated Smoke Control Damper delivers compliant smoke ventilation and compartmentation performance, with reliable operation and simplified installation across shaft and duct applications.

System type

Natural
Mechanical

Customisations available

Sizes

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

Fixings and mastic supplied

Hinged grille access

Insulated to I-Rating

Certified and tested for install into various wall types

Pre-drilled casing

Impact and thermal tested

Key Features

  • I-rated smoke control damper for compliant compartmentation and smoke ventilation 

  • Suitable for smoke shafts and ducted systems across multi-zone applications

  • Tested to 10,000 cycles for proven operational reliability 

  • Hinged white linear grille for easy commissioning and servicing 

  • Pre-drilled steel casing supplied with fixings and mastic for installation-ready setup 

  • Automatic Activation (AA) for fast response in fire conditions 

  • Bi-directionally tested (i↔o) for installation flexibility 

  • Compatible with concrete, flexible, and asymmetric wall constructions 

Read more

Sizes & Materials

  • Maximum size: 969 × 2041 mm 

  • 150+ standard size options available 

  • Standard and custom sizes available 

  • Steel casing with multi-blade, fire-rated louvres 

  • Painted black internal finish

View size guide

Certifications

  • Certified to BS EN 12101-8:2011 

  • Classified to EN 13501-4:2016 

  • Tested to EN 1366-2 (fire damper closed test) 

  • Tested to EN 1366-10 (smoke damper open test) 

  • Fire resistance class: EIS 120 

  • Integrity: E120 

  • Insulation: I120 

  • Smoke leakage: S500–S1000 (size dependent) 

  • Impact resistance: TN75 & TN76 (BS 8200) 

  • Thermal performance: U-value < 1.7 W/m²K 

  • Operational reliability: Tested to 10,000 cycles (C10,000)  

View tech specs

Description

The Sertus I-Rated Smoke Control Damper is a compact, multi-zone unit designed to provide compliant smoke control and compartmentation in both residential and commercial buildings. Installed within smoke shafts or ducted systems, it enables effective smoke extraction while maintaining fire integrity and insulation performance. Read more

Tech Specs

Fire Resistance Class

EIS 120

Integrity

E120

Insulation

I120

Smoke Leakage

S1000

Certification

BS EN 12101-8:2011 / EN 13501-4:2016

Fire Damper Test

EN 1366-2

Smoke Damper Test

EN 1366-10

Operational Reliability

Tested to 10,000 cycles (C10,000)

Activation

Automatic Activation (AA)

Actuator

Belimo 24 V AC / DC actuator

Opening / Closing Time

30 s / 60 s

Bi-directional Testing

Tested inside-to-outside and outside-to-inside

Mounting Position

VEW – vertical wall installation

Mounting Configuration

Rear duct or wall-mounted

Multi-Zone Use

Suitable for multi-zone and multi-compartment systems

Impact Resistance

TN75 & TN76 (BS 8200)

Thermal Performance

U-value < 1.7 W/m²K

Maximum Size

969 x 2041 mm

Size Options

150+ standard sizes

Free Area

Declared by size

Construction

Steel casing with multi-blade fire-rated louvres

Internal Finish

Painted black

Seals

Dry-fit intumescent seal 

Installation

Pre-drilled casing with fixings and mastic 

Access

Hinged white linear grille 

Junction Box

Front or rear entry

Durability

Suitable for high temperature and humid environments

Size Guide

ModelOverall Width (mm)Overall Height (mm)
SLD 30.40369591
SLD 30.45369641
SLD 30.50369691
SLD 30.55369741
SLD 30.60369791
SLD 30.65369841
SLD 30.70369891
SLD 30.75369941
SLD 30.80369991
SLD 30.853691041
SLD 30.903691091
SLD 30.953691141
SLD 30.1003691191
SLD 30.1053691241
SLD 30.1103691291
SLD 30.1153691341
SLD 30.1203691391
SLD 30.1253691441
SLD 30.1303691491
SLD 30.1353691541
SLD 30.1403691591
SLD 30.1453691641
SLD 30.1503691691
SLD 30.1553691741
SLD 30.1603691791
SLD 30.1653691841
SLD 30.1703691891
SLD 30.1753691941
SLD 30.1803691991
SLD 30.1853692041
SLD 45.40519591
SLD 45.45519641
SLD 45.50519691
SLD 45.55519741
SLD 45.60519791
SLD 45.65519841
SLD 45.70519891
SLD 45.75519941
SLD 45.80519991
SLD 45.855191041
SLD 45.905191091
SLD 45.955191141
SLD 45.1005191191
SLD 45.1055191241
SLD 45.1105191291
SLD 45.1155191341
SLD 45.1205191391
SLD 45.1255191441
SLD 45.1305191491
SLD 45.1355191541
SLD 45.1405191591
SLD 45.1455191641
SLD 45.1505191691
SLD 45.1555191741
SLD 45.1605191791
SLD 45.1655191841
SLD 45.1705191891
SLD 45.1755191941
SLD 45.1805191991
SLD 45.1855192041
SLD 60.40669591
SLD 60.45669641
SLD 60.50669691
SLD 60.55669741
SLD 60.60669791
SLD 60.65669841
SLD 60.70669891
SLD 60.75669941
SLD 60.80669991
SLD 60.856691041
SLD 60.906691091
SLD 60.956691141
SLD 60.1006691191
SLD 60.1056691241
SLD 60.1106691291
SLD 60.1156691341
SLD 60.1206691391
SLD 60.1256691441
SLD 60.1306691491
SLD 60.1356691541
SLD 60.1406691591
SLD 60.1456691641
SLD 60.1506691691
SLD 60.1556691741
SLD 60.1606691791
SLD 60.1656691841
SLD 60.1706691891
SLD 60.1756691941
SLD 60.1806691991
SLD 60.1856692041
SLD 75.40819591
SLD 75.45819641
SLD 75.50819691
SLD 75.55819741
SLD 75.60819791
SLD 75.65819841
SLD 75.70819891
SLD 75.75819941
SLD 75.80819991
SLD 75.858191041
SLD 75.908191091
SLD 75.958191141
SLD 75.1008191191
SLD 75.1058191241
SLD 75.1108191291
SLD 75.1158191341
SLD 75.1208191391
SLD 75.1258191441
SLD 75.1308191491
SLD 75.1358191541
SLD 75.1408191591
SLD 75.1458191641
SLD 75.1508191691
SLD 75.1558191741
SLD 75.1608191791
SLD 75.1658191841
SLD 75.1708191891
SLD 75.1758191941
SLD 75.1808191991
SLD 75.1858192041
Check Lead Times
Use our handy PDF guide below to check lead time information for the specification you need.
View Lead Times GuideGet a Quote

Downloads

Complete Documentation Pack

Download a zip file containing all documents for this product.

  • Technical Data Sheet

  • Declaration of Performance

  • Installation Guide

  • Operation & Maintenance Manual

  • Warranty

  • BIM Model

Download Pack

Technical Data Sheet

Detailed technical information in PDF format
Download PDF

Declaration of Performance

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 SLD
Download PDF

Operation & Maintenance Manual

How to use and care for your Shaft Louvre Damper
Download PDF

Warranty

Product warranty in PDF format
Download PDF

BIM Model

Version: Revit 2022
Download BIM

Videos!

Product Video

Two Minute Tuesday – What is a Smoke Control Damper?

2 mins
Product Video

Two Minute Tuesday – Smoke Control Damper Classification: Explained

2 mins
Product Video

Two Minute Tuesday – What Smoke Control Damper Should I Use?

2 mins
Product Video

Two Minute Tuesday – Smoke Control Damper Myths: Busted!

2 mins
Product Video

Two Minute Tuesday – Smoke Control Dampers: Certified, Classified, Tested

2 mins

FAQ

Choose a category
Is the Aerodynamic Free Area available for the SLD?

The aerodynamic area does not apply to dampers or EN12101-8; it is specific to natural smoke vents under EN12101-2.

Do you offer a 1.5m² free area natural vent?

Yes, we can provide our 120.170 SLD, which consists of two 60.170 SLD units.

Where can the actuator be located?

The actuator can be positioned either at the top or the bottom of the SLD.

What is the electrical rating for the SLD?

The standard electrical rating is 24V/0.3A DC, but it can be configured for 230V AC if needed.

Can the SLD be installed in any orientation?

The SLD is certified for vertical installation only and is not approved for horizontal installation.

What is the minimum wall thickness for installation?

The minimum wall thickness required is 125mm for flexible walls.

Can the SLD recess inside the shaft?

Dampers may protrude slightly into the shaft in most cases, but this typically does not pose an issue.

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LIV Sheffield

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Sector

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System Type

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Client

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Products

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View Case Study

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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