DOMUS VENTILATION

CAMBRIA HOUSE
CAERPHILLY BUSINESS PARK
VAN ROAD
CAERPHILLY CF83 3ED

Tel: 03443 715523
Fax: 03443 715524

Company Logo

Suppliers of: Ventilation Ducting Ventilation Ducts Extractor Fans Bathroom Fans Kitchen Fans MVHR Mechanical Ventilation Heat Recovery MEV Mechanical Extract Ventilation

Domus Ventilation, formerly Polypipe Ventilation, manufacture and supply high quality and solution based ventilation products for the domestic and light commercial building industry. Our range of products provide a cost effective way of meeting the requirements of the latest Building Regulations.

Main Product Ranges:

Fan Range:

The range includes award winning, high performing and energy efficient mechanical extract ventilation appliances and fans that are suitable for a wide variety of domestic applications and dwelling sizes.

Mechanical Ventilation with Heat Recovery (MVHR):

  • Ideal for new build
  • Continuous supply and extract ventilation incorporating heat recovery – for whole house applications

Mechanical Extract Ventilation (MEV):

  • System 3 in Approved Document F of the Building Regulations
  • Centralised ventilation unit that continuously extracts waste air

Decentralised Mechanical Extract Ventilation (dMEV):

  • System 3 in Approved Document F of the Building Regulations
  • dMEV fans continuously extract the waste air at both low trickle or boost speeds

In-Line / Axial / Centrifugal Extract Fans:

  • Domus Extract fans remove condensation and moist air and include options ideal for new build and refurbishment applications
  • NEW to the range are Sapphire fans – Designed to complement internal decor with extremely quiet performance.

House Packs:

  • Suitable for multi-floor, single-floor and apartment configurations
  • Over-the-counter full ventilation system

Fan Ancillaries & Controls:

Domus has a wide range of Accessories and Controls to use with our vast rage of ventilation solutions. These include:

  • Extract Fan fitting & Fixing kits
  • Extract Fan Control Options
  • MVHR Accessories / Filters / Duct Kits
  • Condensation Drain Kits
  • MEV Air Supply
  • Sapphire Fan Fascia
  • Spotvent Ceiling Light Grille

Domus Ducting:

Our range of Domus ducting offers a high quality solution for domestic & commercial applications.

  • Ducting Kits
  • Rectangular / Round / Thermal Ducting
  • Flexible / Semi-Rigid / Acoustic Ducting
  • Internal / External Grilles
  • Fire Prevention Solutions
  • Domus Adapt / Domus Radial Ducting Systems

Further Technical information is available to download from the BPi download library or from the Manufacturer’s own website.

 

 

 

These files are provided by the manufacturer. While Building Products Index takes every care to ensure the information is correct and up to date, we cannot be held liable for any out of date or incorrect information in them. Please check with the supplier before specifying or purchasing products.

1. Domus Specification Guide
high performance HRXE Mechanical Ventilation with Heat Recovery (MVHR) and the highly energy-efficient CMX Mechanical Extract Ventilation (MEV) units; including the brand new CMX-MULTI which boasts the best Specific Fan Power (SFP) on the market.

Published [02/05/19]File size [4193 KB]

2. Domus Specification for Rigid Duct Attenuators
Microban® Protected Rigid Duct Attenuators

Published [23/02/18]File size [1265 KB]

2. Domus Ventilation Guide 2018
Mechanical Ventilation with Heat Recovery Mechanical Extract Ventilation Intermittent Extract Fans Rigid and Semi-Rigid Duct Systems

Published [01/03/19]File size [8059 KB]

Domus CMX-MULTI Sales Flyer

Published [23/10/18]File size [3206 KB]

Domus D series Catalogue Update
multipurpose wall, window, ceiling and roof extract fans with optional integrated and remote controls

Published [23/10/18]File size [4067 KB]

Domus HRX-aQ Data Sheet

Published [02/03/18]File size [205 KB]

Domus HRXE Sales Flyer
Mechanical Ventilation with Heat Recovery (MVHR)

Published [23/10/18]File size [746 KB]

Domus Product Selector Brochure 2018
Mechanical Ventilation with Heat Recovery Mechanical Extract Ventilation Intermittent Extract Fans Rigid and Semi-Rigid Duct Systems

Published [23/10/18]File size [3881 KB]

Domus Ventilation Firesleeve Data Sheet
Domus Intumescent Fire Sleeves prevent the spread of fire where Domus rigid ducts penetrate fire compartment walls.

Published [02/03/18]File size [994 KB]

Domus Ventilation HRX2D Data Sheet
HRX2D Mechanical Ventilation with Heat Recovery (MVHR) Unit from Domus Ventilation

Published [02/03/18]File size [164 KB]

Domus Ventilation HRXD Data Sheet
HRXD Mechanical Ventilation with Heat Recovery (MVHR) Unit from Domus Ventilation

Published [02/03/18]File size [178 KB]

AIR BRICK Cowls .
AIR BRICK Ducting .
AIR BRICK Grilles Louvre
AIR BRICKS . .
AIR BRICKS BS 493:1995 .
AIR BRICKS Ducted Cavity Liner
AIR BRICKS Ducted BS 493 .
AIR BRICKS Ventilation .
AIR CONDITIONING SYSTEM Ventilators Heat Exchange .
AIR DIFFUSERS . .
AIR DIFFUSERS Ceiling .
AIR DUCT Fixings .
AIR FILTERS Heat Exchange Ventilator Combined .
AIR GRILLES Extract .
AIR MOVEMENT DESIGN SERVICES
AIR RECOVERY House Ventilation .
AIR VALVES . .
ATTENUATORS
BATHROOM Ventilation .
BRACKETS Tube .
CABLE TRUNKING Accessories .
CAVITY WALL Sleeves Fire Protection
CLIMATE CONTROL Air Handling Systems .
CONDENSATE TRAPS Extractor Fan Systems .
COOKER HOOD Ducting Kits Extraction Ducting
COOKER HOODS Extracting .
COWLS Ventilator .
DOOR Ventilators .
DOOR Ventilators Slot
DUCT CONNECTORS Intumescent .
DUCT INSULATION EN 1366-1 EN 13163 -1
DUCT PIPES Plastic .
DUCT SILENCERS Rectangular .
DUCTING Acoustic .
DUCTING Aluminium .
DUCTING Complete Systems .
DUCTING Flat .
DUCTING Flexible .
DUCTING Flexible Thermal Insulated
DUCTING Insulated .
DUCTING Low Profile .
DUCTING Pre-Insulated .
DUCTING Rigid .
DUCTING Rigid PVC Purpose Made Bespoke
DUCTING Smoke Exhaust .
DUCTING T Pieces and Connectors .
DUCTING Utilities .
EXTRACTOR FANS Automatic .
EXTRACTOR FANS Automatic Shutter Shuttered
EXTRACTOR FANS Axial .
EXTRACTOR FANS Bathroom .
EXTRACTOR FANS Bathroom Ducted .
EXTRACTOR FANS Bathroom IPX4 .
EXTRACTOR FANS Building Regs Regulations Document F
EXTRACTOR FANS Ceiling .
EXTRACTOR FANS Ceiling Light and Ventilation Illuminating
EXTRACTOR FANS Centrifugal .
EXTRACTOR FANS Chrome .
EXTRACTOR FANS Combined Light .
EXTRACTOR FANS Condensation Control .
EXTRACTOR FANS Continuous Background Ventilation .
EXTRACTOR FANS Continuous Mechanical Extract Ventilation dMEV Fans
EXTRACTOR FANS Energy Saving .
EXTRACTOR FANS External .
EXTRACTOR FANS Fire Shutter Combined .
EXTRACTOR FANS Humidity Sensing/Activated Humidistat Control Controlled
EXTRACTOR FANS In-Duct In Duct
EXTRACTOR FANS In-Line In Line
EXTRACTOR FANS Infrared Sensor Motion Activated Movement Sensing, Motion Sensor, Motion Sensing
EXTRACTOR FANS Interval Timed .
EXTRACTOR FANS IPX2 .
EXTRACTOR FANS IPX3 .
EXTRACTOR FANS IPX4 .
EXTRACTOR FANS Kitchen .
EXTRACTOR FANS Low Noise Ultra Extra Quiet Silent Reduced Noise
EXTRACTOR FANS Low Voltage Low Energy
EXTRACTOR FANS Multi Rooms .
EXTRACTOR FANS Multi-Point Central Extract Units .
EXTRACTOR FANS Shower .
EXTRACTOR FANS Timed .
EXTRACTOR FANS Toilet .
EXTRACTOR FANS Utility Room .
EXTRACTOR FANS Wall Cavity Mounting .
EXTRACTOR FANS Window .
FAN CONTROLLERS Automatic .
FAN CONTROLLERS Condensation Control .
FAN CONTROLLERS Humidistat .
FAN CONTROLLERS Humidity Sensing Remote .
FAN CONTROLLERS Time Delay Units .
FAN COVER GRILLES Wall Mounted .
FANS Air Recirculation .
FANS Axial .
FANS Axial Continuous Operation
FANS Bathroom .
FANS Bathroom Extra Low Voltage
FANS Bathroom Extra Low Voltage S.E.L.V.
FANS BS EN 60335 .
FANS BSRIA Tested .
FANS Ceiling .
FANS Centrifugal .
FANS Chrome .
FANS Condensation Control Automatic
FANS Delayed Switch .
FANS Domestic .
FANS Domestic Low Voltage Low Energy
FANS Duct .
FANS Duct Ceiling Mounted
FANS Energy Saving .
FANS Exhaust .See Also EXTRACTOR FANS:
FANS External .
FANS Heat Recovery .
FANS Heat Recovery Whole House
FANS Humidity Control .
FANS In-Line Duct Axial
FANS In-Line Duct Centrifugal
FANS In-Line Duct In Line .
FANS ISO 3741:1988 .
FANS Kite Marked .
FANS Light Combined .
FANS Multi Room In Line Duct .
FANS Plug In .
FANS Pull-Cord .
FANS Safety Extra Low Voltage SELV .
FANS Shower .
FANS Timer .
FANS Ventilation Systems .
FANS W.C. .
FANS Wall .
FANS Window .
FIRE COLLARS EN 1366-3: 2009 .
FIRE COLLARS Intumescent .
FIRE PENETRATION SEALS BS 476:1987 Part 20 .
FIRE PENETRATION SEALS BS 1366-3:2009 .
FIRE PROTECTION For Ducts .
FIRE PROTECTION For Ducts Approved Doc B
FIRE PROTECTION For Ducts BS 476:1987 Part 20
FIRE PROTECTION For Ducts EN 1366-3
FIRE PROTECTION For Ducts Fire Resisting Sleeves
FIRE PROTECTION For Ducts Fire Stops BS EN 1366-3:2009
FIRE SEALS BS 476:1987 Part 20 .
FIRE SEALS Intumescent .
FIRE SEALS Intumescent BS 476:1987 Part 20
FIRE SEALS Intumescent EN 1366-3
FIRE SLEEVES BSEN 1363-1 BSEN 1366-3
FIRE SLEEVES Intumescent .
GRILLES Air See Also VENTILATION GRILLES
HEAT EXCHANGERS Whole House Ventilation Systems .
HEAT RECOVERY SYSTEMS See Also VENTILATION SYSTEMS: Heat Recovery .
HOSE Air .
HOSE Plastic .
KITCHEN VENTILATION . .
KITCHEN VENTILATION Extractor Fans .
LAVATORY Ventilation .
LAVATORY Ventilation Delay Switch
LOUVRES AND SCREENS PVC-u .
LOUVRES AND SCREENS Ventilating / Ventilation .
PIPE Suspension Systems .
PIPE Suspension Systems Ventilation
PIPE BRACKETS .
PIPE BRACKETS Suspended .
PLENUM BOXES Plenum Chambers Plenums
REGISTERS . .
REGISTERS Ceiling Ventilation .
REGISTERS Cill Ventilation .
REGISTERS Wall Ventilation .
REPLACEMENT FRESH AIR INLETS Non-Mechanical Passive Natural Ventilation
ROOF Terminals .
ROOF VENTILATION Cowl .
ROOF VENTILATION Cowl High Rise .
ROOFING SLATES Roof Weathering Slates .
ROOFING SLATES Roof Weathering Slates Ventilation Slates
SEALANT Tapes .
SEALANT Tapes Self-Adhesive
SEALANTS Mastic: By Colours: White
SEALANTS Mastic: by Composition: Acrylic
SEALANTS Mastic: by Special Function: Ductwork Ducting
SEALANTS Mastic: by Special Function: Intumescent
SEALANTS Mastic: by Special Function: Intumescent Acoustic
SOIL PIPES and FITTINGS Vent Terminals .
TAPES Duct .
TUMBLE DRYER Ventilating Kits Extraction Ducting
VENTILATION Airbricks .
VENTILATION Bathroom Powered
VENTILATION Bathroom Powered Ducted
VENTILATION Cavity Wall (Powered) .
VENTILATION Combined Light .
VENTILATION Condensation Traps .
VENTILATION Continuous .
VENTILATION Cooker Hood Kits .
VENTILATION Cowls .
VENTILATION Delayed Switch .
VENTILATION Diffusers .
VENTILATION Fans .
VENTILATION Fire Control .
VENTILATION Outlets .
VENTILATION Outlets Air Terminals Internal Wall Room
VENTILATION Outlets Airbrick
VENTILATION Outlets Airbrick Adaptors
VENTILATION Outlets Bull Nose
VENTILATION Outlets Cowled
VENTILATION Outlets Stainless Steel
VENTILATION Registers .
VENTILATION Tumble Dryer Kits .
VENTILATION WC (Powered) .
VENTILATION Window .
VENTILATION Window Kits .
VENTILATION DUCTING Acoustic .
VENTILATION DUCTING Aluminium .
VENTILATION DUCTING Cooker Hood .
VENTILATION DUCTING DIN 4102 B1 .
VENTILATION DUCTING Fire Resistant Ducts .
VENTILATION DUCTING Flat Channel .
VENTILATION DUCTING Flexible Hose .
VENTILATION DUCTING Heat Recovery Systems .
VENTILATION DUCTING Kits .
VENTILATION DUCTING Low Profile .
VENTILATION DUCTING Push to Fit .
VENTILATION DUCTING PVC .
VENTILATION DUCTING Rigid Duct System
VENTILATION DUCTING Silencer Incorporated .
VENTILATION DUCTING Tumble Dryer .
VENTILATION DUCTING UL94 V2 .
VENTILATION DUCTING Wall .
VENTILATION DUCTING Whole House Systems .
VENTILATION GRILLES . .
VENTILATION GRILLES Flyscreen / Insect Screen Incorporated .
VENTILATION GRILLES Plastic .
VENTILATION GRILLES Square Mesh .
VENTILATION GRILLES Stainless Steel .
VENTILATION GRILLES Supply .
VENTILATION GRILLES Wall .
VENTILATION LOUVRES . .
VENTILATION LOUVRES Fixed Domestic .
VENTILATION SYSTEMS Central Extract Domestic
VENTILATION SYSTEMS Design .
VENTILATION SYSTEMS dMEV Single Room (SRHR) Mechanical Extract Ventilation
VENTILATION SYSTEMS Domestic Ceiling Terminals
VENTILATION SYSTEMS Domestic Condensation Control
VENTILATION SYSTEMS Domestic Heat Exchange
VENTILATION SYSTEMS Domestic Mechanical Continuous Supply and Extract MEV
VENTILATION SYSTEMS Domestic Thermal Transfer Systems
VENTILATION SYSTEMS Heat Recovery .
VENTILATION SYSTEMS Heat Recovery Domestic .
VENTILATION SYSTEMS Heat Recovery Domestic Whole House Systems MVHR
VENTILATION SYSTEMS Heat Recovery Whole House .
VENTILATION SYSTEMS Heat Recovery Whole House MVHR Exchanger Combined
VENTILATION SYSTEMS Heat Recovery Whole House MVHR Mechanical Ventilation Heat Recovery
VENTILATION SYSTEMS Heat Recovery Whole House SAP Appendix Q Listed
VENTILATION SYSTEMS Internal Systems Powered .
VENTILATION SYSTEMS Manufacturing and Design Purpose Made Bespoke Systems
VENTILATION SYSTEMS Mechanical MEV dMEV
VENTILATION SYSTEMS Multi-Room Systems .
VENTILATION SYSTEMS Natural Louvred
VENTILATION SYSTEMS Roof and Wall .
VENTILATION SYSTEMS Safety Extra Low Voltage SELV .
VENTILATION SYSTEMS Whole House Building Regs Document F .
VENTILATION SYSTEMS Whole House Building Regs Part L Compliant .
VENTILATION SYSTEMS Whole House Central Extract Centralised Balanced .
VENTILATION SYSTEMS Whole House Centralised Design Service .
VENTILATION TERMINALS Mechanical Extract .
VENTILATION TERMINALS Natural .
VENTILATION TERMINALS Roof Mounting .
VENTILATION UNITS Continuous Mechanical Extract Systems MEV System 3 Approved Doc F
VENTILATION UNITS Heat Recovery .
VENTILATION UNITS Heat Recovery Social Housing
VENTILATION UNITS MVHR Units .
VENTILATOR Cowls .
VENTILATORS Door .
VENTILATORS Heat Recovery .
VENTILATORS Plinth .
VENTILATORS Wall .
VENTILATORS Worktop .
BLUEBRAIN Mechanical Ventilation Controller
DOMUS Ventilation Ducting
DOMUS ADAPT Ducting Systems
DOMUS RADIAL Whole House Ventilation
DOMUS THERMAL Duct Insulation
EASIPIPE Ducting
FIREBRAKE Fire Sleeves
MEGADUCT Ducting
MICROBAN Rigid Duct Attenuator
SAPPHIRE Domestic Extractor Fan
SUPERTUBE Duct Silencers

Domus Ventilation - MEV vs MVHR – Making an informed decision

June 2019

MEV vs MVHR – Making an informed decision

Over the last few years we’ve done a great job of improving the energy-efficiency of new build homes, with a particular focus on sealing buildings to prevent any wasteful heat leakage.

In general, this has worked remarkably well – in some cases it’s worked too well! We’ve created air-tight homes that can sometimes overheat or trap stale, humid air – along with a mixture of indoor air pollutants.

What we’ve failed to do in that period of improvement is match our more efficient homes with equally efficient ventilation.

Why not just open a window or two if you need ventilation?

It’s a common question and definitely works as a quick fix, but in cooler or damp weather it’s not ideal, nor is it enough in the warmer summer months. That’s where continuous mechanical ventilation systems steps in.

So, what’s the right system for you?

To better understand what’s right for you, first you should know the strengths and weaknesses of MEV & MVHR.

The Options – Continuous Mechanical Ventilation

According to Building Regulations Approved Document F, for whole-house continuous mechanical ventilation systems you are looking at a choice between System 3 Continuous Mechanical Extract Ventilation (MEV) or System 4 Continuous Mechanical Ventilation with Heat Recovery (MVHR).

The Breakdown – MEV

Simple and efficient to install, MEV systems actively extract air from ‘wet rooms’ (kitchens, bathrooms, utility spaces) via ducting to a central ventilation unit. This then removes the stale air though an exhaust point.

The systems are typically dual speed, providing low-speed continuous trickle ventilation and high-speed boost flow when needed. Replacement fresh air is drawn into the property via background ventilators located in the habitable rooms and through air leakage.

Decentralised Mechanical Extract Ventilation (dMEV), a sub-set of System 3 (MEV), are an extremely cost effective and easy to install ventilation solution. They offer continuous low levels of ventilation to a single wet room, coupled with virtually silent operation.

The Breakdown – MVHR

MVHR systems combine supply and extract ventilation in one system - working on the principle of extracting and re-using waste heat from wet rooms.

MVHR systems make use of the waste stale air by pre-warming the fresh air drawn into the building using a heat exchanger; up to 95% of waste heat can be recovered by this mechanism. The filtered, pre-warmed air is then distributed around the home, helping share the load for heating the home.

MVHR systems provide effective ventilation, are energy efficient, massively help reduce the risk of condensation and cold air draughts and, with their built-in air filters, are particularly useful in more polluted urban areas. They are the champions of domestic ventilation!

BUT. All those benefits do come with a naturally higher price tag than their counterparts and are considerably more complex to install and commission.

Installation

MEV systems are far easier to install since they require less ducting because air is being drawn only one way: out. With MVHR, there is a further set of ducting to take the air from the unit into rooms.

MEV systems are easy to use – more of a fit and forget scenario than MVHR systems which require maintenance, including regular filter changes. In the case of our own CMX range of MEV systems, the optional speed and user controls enable simple operation and control for the homeowner, making them less likely to experience difficulties. Models are also available with an integral humidistat which identifies changes in humidity and automatically adjusts the air flow of the unit accordingly.

So which is for me?

Both MEV and MVHR systems are most suitable for new properties rather than retrofit, but MVHR systems do require a more airtight property where virtually all of the air flow can pass through the heat exchanger, if they are to perform efficiently.

With inner cities obviously having higher pollution levels, MVHR systems are seen as more suitable because of the filter element, but in apartment blocks it’s often the case that only the first four floors are fitted with MVHR and the remaining with MEV as polluted air is heavier and therefore stays closer to the ground.

MVHR systems are the undisputed kings of whole-house ventilation solutions, hence the recent boom in popularity of the units. However, if simple low maintenance, ultra-quiet ventilation is what you’re looking for then MEV could be the way to go.

Domus Ventilation - Understanding the MVHR boom

May 2019

Understanding the MVHR boom

Penny Jones, Product Manager at Domus Ventilation, explains why MVHR systems have become so popular and lists the three key points to success in this market.

Mechanical Ventilation with Heat Recovery (MVHR) systems has never been so popular. They improve indoor air quality (IAQ) and reduce energy bills by up to 50% due to the reduced heating demand.

Potentially, all new homes can benefit from MVHR, including smaller properties and especially those in inner-cities where air pollution is a problem. With electricians moving into this profitable line of work, the natural starting point is with smaller systems. There are, however, certain criteria that need to be taken into account for a successful MVHR installation in a smaller property, which is important for you to know from an advice point of view and also for knowing what products to stock.

Size matters

It might sound obvious, but the smaller the property, the smaller the spaces available to fit an MVHR system. The majority of MVHR units are wall mounted within the envelope of the property; most commonly in a cupboard. The size of the unit therefore needs to be compact, especially when it comes to height; the Domus HRXE, for example, is just 507mm in height.

Where installation in a cupboard is not an option, then a ceiling void should be a consideration. Here the depth of the unit and weight are key factors. The Domus HRX-aQ is the shallowest in the market place, measuring down to 199mm in depth and weighing from 7.9kg, making it compact and light enough to be easily installed in the most restrictive of ceiling voids.

Silence is golden

A well designed and correctly installed MVHR system shouldn’t cause unnecessary noise during everyday activities. Look for a system that generates less than 24dBA (typically whisper quiet) at a distance of more than one meter away from the air valve.

There are useful accessories here that make for an even quieter system and represent a good upsell. An Anti-Vibration tray isolates the MVHR unit from the wall to reduce any low levels of vibration induced noise which can be distracting to residents in smaller properties where the unit cannot be placed far away from bedrooms and main living spaces. Duct sound attenuators are particularly popular as they absorb sound over a range of audible frequencies that travel down the ducting from the fan, or from traffic noise or room-to-room-cross talk.

On the run

An MVHR system is only as good as its ducting, so quality ducting is essential and makes for a better sale. Poor ducting is easy to spot – the channel or pipe bows or looks like it is concave or the wall thickness appears uneven. This impacts the air flow, sound and overall effectiveness of an MVHR system.

Ducting for MVHR systems is normally Ø125 or 150mm (or the equivalent in rectangular). To maximise air flow and reduce air leakage, sharp bends need to be avoided, but in smaller properties this can be a real issue. Suggest a Radial semi-rigid ducting system instead. Unlike traditional branch-based ducting, Radial systems allow each room vent to be served by single or twin duct runs which connect directly to the central distribution system, evenly splitting the air from the MVHR unit. This can work better in small spaces and makes it easier for installers.

With IAQ now making it on to the national news agenda and organisations lobbying the government to introduce policies in relation to ventilation and IAQ, the uptake of MVHR systems is on an upward trajectory and electricians are getting in on the act. Starting with smaller properties and therefore smaller MVHR systems is a sensible approach; just be sure your customers are equipped with the right products!

WHAT IS MVHR?

Mechanical ventilation systems are a cost-effective method of improving indoor air quality by extracting stale air. MVHR systems, these go one step further by combining supply and extract ventilation in one system. They work on the principle of extracting and re-using waste heat from wet rooms.

MVHR systems efficiently tempers the fresh air drawn into the building with waste stale air using a heat exchanger; up to 94% of waste heat can be recovered when using a Domus MVHR system. The filtered, tempered air is then distributed around the home, effectively meeting part of the heating load in energy efficient dwellings.

For further information

To learn more about indoor air quality and MVHR, contact our sales team: https://www.domusventilation.co.uk/contact-us

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