UK · Frameless gypsum air diffusers · Made in the EU
Ventmann in London
Specify and order Ventmann frameless air diffusers through Faura at the Faura Interior Design Residency, Westminster, SW1.
Ventmann is a maker of patented frameless gypsum air diffusers, sold in Britain by Ventmann UK Ltd from Tamworth, Staffordshire, and designed, patented and manufactured in the EU. Its linear slot, round, square and side diffusers are plastered into plasterboard walls and ceilings and painted with the surrounding surface, so air conditioning and MVHR vents almost disappear. Interior designers, architects and developers can specify Ventmann through Faura at the Faura Interior Design Residency in Westminster, SW1, and coordinate it with the ceilings, lighting and finishes of a project. Visits are by appointment.

Ventmann at a glance
- Company
- Ventmann UK Ltd, Tamworth, Staffordshire
- Made in
- Designed, patented and manufactured in the EU
- Material
- Patented gypsum composite with a resin binder; non-combustible, A1 fire classification
- Ranges
- LINE and Performance Line slot diffusers, CIRCLE and Performance Circle, SQUARE, SIDE and ART diffusers, plenum boxes and fittings
- Recognition
- Red Dot design award for Ventmann's Coanda-effect diffusers
- For architects
- Technical catalogue with performance data, installation manuals and an online CPD course
- Through Faura
- Specification and trade ordering at the Faura Interior Design Residency, Westminster, SW1 (by appointment)
Ventmann through Faura
Faura specifies Ventmann diffusers so that ventilation and air conditioning sit quietly within the ceilings and walls of a finished interior.
| Range | Ventmann | Through Faura |
|---|---|---|
| Linear slot diffusers | LINE: 1, 2 or 3 slots in 12 or 18 mm widths, in 625, 1000 and 1250 mm lengths that join into continuous lines | Specified and ordered through Faura |
| Air conditioning | Performance Line (PLINE), using the Coanda effect for air-conditioning systems | Specified with the M&E design |
| Round diffusers | CIRCLE and Performance Circle (PCIRCLE), with a removable click-system cap | Specified and ordered through Faura |
| Square and wall diffusers | SQUARE ceiling diffusers and Side Square and Side Round wall diffusers | Specified and ordered through Faura |
| Bespoke grilles | ART frameless grilles in custom shapes and sizes, for fireplaces, inspection hatches and special openings | Specified for individual details |
| Plenum boxes | Acoustic Box and Thermo Box plenums for slot diffusers, plus fittings and flexible ducting | Specified with the diffusers |


How frameless diffusers work
Conventional vents have a plastic or metal grille and frame that sits proud of the plasterboard. Ventmann diffusers are made from gypsum, so they are plastered in with a light skim and painted with the wall or ceiling, leaving no visible frame. Because the material behaves like the surrounding surface, the painted joint stays invisible, and the diffuser can simply be repainted when the room is redecorated.
Ventmann states that its gypsum composite is non-combustible, with an A1 fire classification, and that it resists condensation, which helps prevent the mould and dark marks common around metal and plastic vents.
The ranges
- LINE: the most versatile linear slot diffuser, which can run as a single detail or as continuous lines across a ceiling.
- Performance Line: engineered for air-conditioning systems and using the Coanda effect, in which the airflow follows the ceiling or wall surface.
- CIRCLE and Performance Circle: round frameless diffusers for supply and extract, with a click-system removable cap on PCIRCLE for maintenance.
- SQUARE and SIDE: geometric ceiling diffusers, and Side Square and Side Round models for walls.
- ART: frameless grilles made to custom shapes and sizes.
Round, square and side diffusers come in spigot sizes of 100, 125, 160, 200 and 250 mm, to suit standard ductwork.
Where they are used
Ventmann diffusers work wherever plasterboard is used, including bathrooms, and with traditional HVAC, heat pumps and air conditioning, MVHR heat-recovery systems and humidification, for both supply and extract. Ventmann lists luxury residential projects, offices, hotels, retail, healthcare and education among its applications. They are not designed for stretch ceilings.
Quiet by design
Ventmann publishes the airflow rates below which each diffuser is inaudible, using 17 dB as its threshold rather than the 25 dB it describes as the industry norm, to allow for other factors in the system.
Specifying Ventmann through Faura
- 01Plan the ceilingsBook a private visit to the Residency in Westminster and plan diffuser positions with the lighting, joinery and ceiling details of your scheme.
- 02Size the diffusersFaura works with your M&E engineer, using Ventmann's technical catalogue for airflow, throw and sound data, to choose models, lengths and spigot sizes.
- 03Technical packageVentmann's technical catalogue and installation manuals go to the contractor, and its online CPD course explains the design process.
- 04Order and deliveryFaura orders the diffusers, plenum boxes and fittings and coordinates delivery to site before plastering.
Frequently asked questions
- Where can I buy Ventmann diffusers in London?
- Interior designers, architects and developers can specify and order Ventmann through Faura at the Faura Interior Design Residency in Westminster, SW1, by appointment.
- Where are Ventmann diffusers made?
- Ventmann states that all its products are designed, patented and manufactured in the EU, using its own gypsum composite. In Britain they are supplied by Ventmann UK Ltd, based in Tamworth, Staffordshire.
- What is a frameless diffuser?
- A vent with no visible frame or grille. Ventmann diffusers are made from gypsum and plastered into the surrounding plasterboard with a light skim, then painted the same colour as the wall or ceiling, so the joint is invisible.
- Can Ventmann diffusers be used with air conditioning and MVHR?
- Yes. Ventmann diffusers work with air conditioning, heat pumps, MVHR heat-recovery systems and traditional HVAC, for supply and extract. The Performance Line and Performance Circle models are engineered for air-conditioning airflow.
- Can Ventmann diffusers be used in bathrooms?
- Yes, anywhere plasterboard is used. Ventmann notes that its products have a resin binder, which makes them more resilient to damp than regular gypsum plasterboard.
- Are Ventmann diffusers fire rated?
- Ventmann describes its gypsum composite as non-combustible, with an A1 fire classification.
- Can I get Ventmann CAD files and technical data?
- Ventmann's technical catalogue gives specifications, airflow, pressure-drop and sound data and installation guidance for each series, and its installation manuals cover each model. Faura can request any drawings the project needs from Ventmann.
- What sizes do Ventmann linear diffusers come in?
- Linear slot diffusers come in 625, 1000 and 1250 mm lengths, with one, two or three slots in 12 or 18 mm widths, and can be joined end to end into continuous lines.
- How much do Ventmann diffusers cost, and what are the lead times?
- Both depend on the models, sizes and quantities. Faura prepares trade quotations for each project and confirms timing for each order.
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Sources: Ventmann — About us · Technical catalogue · FAQ · Architect CPD course · Contact information.
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Book a private visit
See Ventmann in person at the Faura Interior Design Residency in Westminster. Appointments are held Monday to Friday, 09:00–18:00.
Faura Interior Design Residency · Westminster, London SW1 · showroom@faura.global