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Gustafs / solutions / Capax Installation Systems - The right system for every Gustafs product
Gustafs / solutions / Capax Installation Systems - The right system for every Gustafs product

CAPAX AND INSTALLATION

Start with the requirement.
Find the right installation system.

When specifying Gustafs products, fire performance, acoustic performance and visual quality are not defined by the panel or material alone. They depend on the complete system and how it is installed. Fire classification, acoustics and demountability are system properties, not just product properties. Select what your project requires below and see which installation systems and products apply.

Jump to: Which system do I need? Design options – Wall panel installation Examples by system Installation guides FAQ

Installation defines the final result

FIRE

Reliable fire performance – not just the product

Many suppliers certify the raw panel. We certify the finished product as installed – including the wood veneer surface, the lacquer or oil finish, the acoustic perforations, and the Capax fixing system with specified air void and joint detail.

Other suppliers might add a surface or finish after certification. That drops the actual fire rating to a level that is no longer approved – and the certification is no longer valid.
What real fire safety means →

FLEXIBLE AND PRECISE

Fast to install, easy to access

Alignment, joints and rhythm are controlled and repeatable, allowing the finished surface to match the intended design.

Gustafs guarantees a minimum product lifetime of 50 years for most of our products. A demountable, reusable wall or ceiling is a lifecycle advantage.

DESIGN

Installation as part of the design

Capax is not only a technical support system. It can form the architectural outcome.

Different installation principles allow the expression to be defined through:

• Open joints
• Closed joints
• Direction and rhythm
• Variation across surfaces

This enables the installation to actively contribute to the overall design, rather than simply support it.

ACOUSTICS

Controlled acoustic results

The absorption class of a ceiling is determined by the complete assembly – product, void depth, insulation type and fixing configuration. Gustafs documents acoustic values for each product at multiple installation depths, so specifiers can verify performance for each room rather than rely on best-case data from a single test condition.

Use the Acoustic Selector to find the product and installation method that match your requirements

Guidance for your project

Capax and installation methods includes several installation principles adapted to different requirements. Choose your next step based on your project needs: Acoustics or other.

SELECT ION BASED ON SOUND ABSORBTION

1. Acoustic absorption selector

Select installation type and absorption class to find products and installation methods that meet your project requirements.

For full acoustic data visit Acoustic values of Gustafs products

01 — Select installation
02 — Select absorption class

ISO 11654 — practical sound absorption coefficient αw

Multiple classes can be selected

SELECTION installation system BASED ON PROJECT REQUIREMENTS

2. Selection based on installation and project requirements

Select one or more requirements. The systems and products below will update to show only what applies.

SELECT BASED ON Project requirements

Select one or more requirements to find the right system

Looking to select by acoustic performance? Use the Acoustic absorption selector to filter products by absorption class, installation type and insulation depth.

Capax System
A2-s1,d0 B-s1,d0 Demountable Ceiling + Wall Wet rooms
↓

The most widely specified Capax system — engineered for Panels, Linear Ribs, Plank and Feltfon in both ceiling and wall applications. Strong torsional rigidity, concealed fixing and guaranteed zero-spacing joints over time.

Fire class depends on product choice. A2-s1,d0: Plain panels, Perforated panels, Stripes, Stripe-XL, Plank-P — with veneer or foil surface. B-s1,d0: Linear Rib-R, Rib-S, Rib Narrow, Linear Plank, Nano panel, all Feltfon products. A2-s1,d0 products always meet B-s1,d0 requirements as well. Feltfon products are suitable for wet rooms and humid environments when installed with the Capax System.

Fire class

A2-s1,d0 or B-s1,d0 — per product

Demountable

Yes — individual panels

Application

Ceiling + Wall

A2-s1,d0 products

Panel Installation – Ceiling & Wall

Plain, Perforated, Stripes, Stripe-XL · A2-s1,d0

CeilingWall

Linear Plank-P – Ceiling & Wall

A2-s1,d0

CeilingWall

B-s1,d0 products

Linear Rib Installation – Ceiling & Wall

Rib-R, Rib-S · B-s1,d0

CeilingWall

Linear Rib Narrow – Ceiling & Wall

22 mm · B-s1,d0

CeilingWall

Linear Plank – Ceiling & Wall

B-s1,d0

CeilingWall

Nano Panel Installation – Ceiling & Wall

B-s1,d0

Install guide

Feltfon Installation – Ceiling & Wall

All Feltfon products · Wet rooms · B-s1,d0

CeilingWall
Learn more → All fire classifications All acoustic values Panels range Linears range
Capax MIX
A2-s1,d0 B-s1,d0 Demountable Ceiling only
↓

Designed for feature ceilings combining multiple products in one plane. Ribs, Feltfon, Blayde, Rib Narrow, Rib HD and integrated F-Line LED share the same BASE-CF carrier with perfect alignment and consistent spacing. Each element clicks in and is individually demountable.

Fire class depends on product choice. Linear Ribs (Rib-R, Rib-E, Rib Narrow, Rib HD) and Blayde baffles achieve A2-s1,d0 with fibre-gypsum core. Feltfon elements carry B-s1,d0. A combined installation achieves the classification of the lowest-rated component in the zone.

Fire class

A2-s1,d0 / B-s1,d0 per product

Demountable

Yes — individual elements

Application

Ceiling only

LED integration

F-Line R & F-Line C

Compatible products — B-s1,d0

Mix Installation – Ceiling

Ribs + Feltfon + Blayde + LED · A2-s1,d0 / B-s1,d0 per product

Install guide

Blayde – Ceiling

Wide-format linear baffle · A2-s1,d0 / B-s1,d0

Install guide

Linear Rib-E – Ceiling

Rounded profile · B-s1,d0

Install guide

Rib HD – Ceiling

Up to 74 mm depth · B-s1,d0

Install guide

Rib Narrow – Ceiling (MIX)

22 mm · B-s1,d0

Install guide

F-Line R & F-Line C – Integrated LED

LED in Feltfon element · MIX system

F-Line RF-Line C
Learn more → All fire classifications All acoustic values Feltfon range
Module-FS
B-s1,d0 Demountable Bespoke modules Ceiling + Wall
↓

Installation platform for Lamellow+ panels and prefabricated rib modules — Module-T24 and bespoke configurations. Lamellow+ can be mounted directly on wall or ceiling (screw, nail or glue) or suspended via T24/T24-DA. Pre-assembled modules hang from hook-shaped battens with full demountability maintained.

Fire class: B-s1,d0 — all products. Module-FS, Module Wall, Module-T24 and Lamellow+ all carry B-s1,d0 as their highest classification. Module-FS is not suitable for projects requiring A2-s1,d0.

Fire class

B-s1,d0 — all products

Demountable

Yes — module-by-module

Application

Ceiling + Wall

Assembly

Direct fix or pre-assembled modules

Lamellow+

Lamellow+

Direct fix — screw, nail or glue · Wall & Ceiling · Class A achievable · B-s1,d0

ProductInstall guide

Lamellow+ T24 & T24-DA – Ceiling

Suspended T24 grid · Class A achievable · B-s1,d0

T24T24-DA

Pre-assembled modules

Installation Module-FS – Ceiling

Lamellow+ · pre-assembled · B-s1,d0

Install guide

Module Wall

Lamellow+ · pre-assembled · Wall · B-s1,d0

Install guide

Module-T24 – Ceiling

T24 suspended grid · B-s1,d0

Install guide
Learn more → All fire classifications All acoustic values Core materials
Direct
B-s1,d0 Ceiling + Wall Wet rooms
↓

Lamellow and Lamellow+ can be installed directly on walls and ceilings without a profile system — using screws, nails or glue. Simple and fast with no substructure required. Lamellow Spa is the dedicated variant for wet rooms, bathrooms and spa environments with C3/C4 corrosion-rated aluminium profiles.

Fire class: B-s1,d0 — all products.

Fire class

B-s1,d0

Fixing

Screw · nail · glue

Application

Ceiling + Wall

Acoustic

Class A achievable

Substructure

Not required

Wet rooms

Lamellow Spa · C3/C4

Compatible products — B-s1,d0

Lamellow+

Direct fix · Ceiling + Wall · Class A achievable · B-s1,d0

ProductInstall guide

Lamellow Spa

Direct fix · Wet rooms · Ceiling + Wall · C3/C4 · B-s1,d0

ProductInstall guide
Learn more → All fire classifications All acoustic values Core materials & moisture Linears range Contact a representative
DESIGN POSSIBILITIES WITH CAPAX

Panel installation on walls

Capax enables a range of wall installation options, allowing the visual expression to be defined through the installation itself.

Different joint configurations create distinct architectural results, while maintaining the same tested system and installation precision.
• Open joints for a more articulated expression
• Closed joints for a continuous surface
• Defined spacing to create rhythm and direction

All options are based on the same system logic, ensuring consistent performance and build quality.

Capax System — Panel Installation

Capax solutions – Wall Installation
A2-s1,d0 B-s1,d0 Demountable Wall
↓

Panels are locked on all four sides using Capax mounting profiles — concealed, torsionally rigid and fully demountable. The system accommodates flat, curved and partition wall constructions across a wide range of joint, corner and acoustic configurations.

Products

Panels, Perforated, Stripes, Stripe-XL, Plank-P

Fire class

A2-s1,d0 or B-s1,d0 — per product

Demountable

Yes — all profiles

Acoustic build-up

17 · 38 · 88 mm

Curved walls

R ≥ 5 m standard · R < 5 m on request

Panel size

Up to 3000 × 600 mm

Closed joint profiles

Capax 3201
Capax 3201
Closed joint
Click to enlarge
Capax 3208
Capax 3208
Closed joint
Click to enlarge
Capax 3217
Capax 3217
Closed joint
Click to enlarge

Open joint profiles

Capax 3202 5mm
Capax 3202 / 3212
5 mm open joint
Click to enlarge
Capax 3202 10mm
Capax 3202 / 3212
10 mm open joint
Click to enlarge
Capax 3206
Capax 3206
13 mm open joint
Click to enlarge

Outer corner profiles

3209
Capax 3209 / 3239
Outer corner
Click to enlarge
3215
Capax 3215
Outer corner
Click to enlarge
3218
Capax 3218
Outer corner
Click to enlarge
3219
Capax 3219 / 3229
Outer corner
Click to enlarge

Inner corner profiles

3203 inner
Capax 3203
Inner corner
Click to enlarge
3218 inner
Capax 3218
Inner corner
Click to enlarge

Start & end profiles

3200 start
Capax 3200
Start
Click to enlarge
3203 start
Capax 3203
Start
Click to enlarge
3204 end
Capax 3204
End
Click to enlarge
3205 end
Capax 3205
End
Click to enlarge

Demountable profiles

3200 demount
Capax 3200
Demountable start
Click to enlarge
3202 5mm demount
Capax 3202
Joint 5 mm
Click to enlarge
3202 10mm demount
Capax 3202
Joint 10 mm
Click to enlarge
3202 15mm demount
Capax 3202
Joint 15 mm
Click to enlarge

For curved walls with R < 5 m, door liners and bespoke closures — contact support. Full technical drawings and step-by-step guide on the installation page.

Links → Full installation guide All fire classifications All acoustic values Panels range

INSTALLATION SYSTEMS

The system is the specification

Fire performance, acoustic quality and long-term maintainability are not defined by the panel alone – they are defined by the complete assembly. Every Gustafs installation system is engineered and certified as a finished solution, not as a collection of components.

Capax System
For panels, ribs and Feltfon on walls and ceilings. The only system that can deliver A2-s1,d0.
Capax Mix
For ceilings combining multiple materials in one plane. Ribs, Feltfon, Blayde and LED in the same grid. Fire class depends on product choice.
Module-FS
For Lamellow+, Module-T24 and bespoke modules. Pre-assembled units. B-s1,d0.
Lamellow Spa
For wet rooms, spa and bathrooms. Dedicated system with C3/C4 corrosion protection. B-s1,d0.
CAPAX SYSTEM – WALL

Wall

Capax System for walls follows the same profile logic as the ceiling system — panels lock on all four sides with concealed aluminium profiles, guaranteeing zero-gap joints and full individual demountability. Combined wall and ceiling installations within the same space share one coordinated fire classification. A2-s1,d0 available throughout.

Panels · Ribs · Plank · Feltfon

CAPAX SYSTEM – CEILING

Standard Ceiling

Offices, education, healthcare, hospitality – Capax System ceiling is the most widely specified Gustafs installation, supporting all product types and all acoustic void depths.
Concealed fixing, torsional rigidity and guaranteed zero-gap joints over time. A2-s1,d0 available with Gustafs Panels, Stripe-XL and Plank-P.

Panels · Ribs · Plank · Feltfon · Stripe-XL

MODULE WALL & CEILINGS

Bespoke modules

Module is a system for Lamellow+ and larger-format rib configurations that arrive on site pre-assembled and ready to hang. Hook-shaped battens and  puzzle piece allow the complete module to be removed without disturbing adjacent panels. Suitable for both ceiling and wall applications where a even faster site process is a priority.

CAPAX MIX CEILINGS

Feature ceiling

When one ceiling combines more than one material.

Capax MIX is designed for installations where Ribs, Feltfon, Blayde and F-Line integrated LED lighting share the same ceiling plane. A single BASE-CF carrier controls alignment and spacing across all elements — no visible transitions, no profile changes. Every element clicks in individually.

DIRECT INSTALLATION

Lamellow & Lamellow Spa

No profile system required. Lamellow+ and Lamellow Spa can be fixed directly to any sound substrate using screws, nails or glue – making them the fastest Gustafs installation method. Lamellow Spa extends this simplicity to wet rooms, bathrooms and spa environments with C3/C4 corrosion-rated hardware.

Note: Direct fixing without an air void or insulation achieves absorption Class D. To reach Class A, Lamellow+ must be installed with the Module-FS system or suspended via T24/T24-DA with the appropriate void depth.

Frequently asked questions

Does the A2-s1,d0 fire classification cover the complete installed system — including profiles, fixings and surface finish?

Yes — and this is one of the most important things to verify when comparing suppliers. Gustafs classifies the complete installed system as it is used in real life: panel core, decorative surface (veneer, foil or laminate), surface finish (lacquer, oil or paint), acoustic perforations where applicable, and the Capax fixing system with specified air void and joint configuration. What the datasheet says is exactly what is installed in the building. Some suppliers certify the raw board only and add surface materials afterwards — this drops the fire rating of the complete product to a level that is no longer approved. Read more about real fire safety →

Which Capax system do I specify if my project requires A2-s1,d0?

Both Capax System and Capax MIX can deliver A2-s1,d0 when specified with the correct products. In Capax System: Plain panels, Perforated panels, Stripes, Stripe-XL and Plank-P achieve A2-s1,d0. In Capax MIX: Linear Ribs and Blayde baffles achieve A2-s1,d0. Feltfon elements in both systems carry B-s1,d0. In a mixed installation, the zone classification is determined by the lowest-rated component. A2-s1,d0 is achieved with: Plain panels, Perforated panels, Stripes, Stripe-XL and Linear Plank and Plank-P – all with veneer or foil surface finish. Linear Ribs (Rib-R, Rib-S), Nano panel, Linear Plank and all Feltfon products carry B-s1,d0 as their highest classification. Capax MIX and Module-FS are B-s1,d0 systems throughout. Note that A2-s1,d0 products always meet B-s1,d0 requirements as well. See all fire classifications →

How deep a void do I need to achieve absorption Class A?

Acoustic class depends on the complete installation assembly — not the product alone. The same panel or rib product can achieve anything from Class D to Class A depending on void depth and insulation treatment. As a general guide, Class A absorption (αw ≥ 0.90) typically requires a minimum 200 mm void with mineral wool infill when using Feltfon or perforated acoustic panels. Lamellow+ can achieve Class A with an air void alone in ceiling applications, or with 45 mm insulation in wall applications. Always verify with product-specific acoustic data for each room configuration. Download all acoustic values →

Can panels and ribs be removed without specialist tools or additional trades?

Yes. Individual panels are released and lowered using a standard panel removal tool included in the Capax installation kit. Linear Ribs click in and out of the BASE-CF carrier individually. No drilling, cutting or specialist equipment is required, and adjacent panels are not disturbed. This makes access to MEP services above the ceiling straightforward throughout the building’s operational life – without mobilising additional trades or causing disruption to surrounding spaces.

Does the fire classification still apply after panels have been removed and reinstalled?

Yes — provided the same panels and Capax profile components are reinstalled in the correct configuration without modification. The A2-s1,d0 or B-s1,d0 certification documents the complete system assembly. If panels are replaced with different products, or if the profile configuration changes, the installation must be re-evaluated against current certification documentation before the classification can be relied upon.

Which system do I specify for a bathroom, spa or wet room ceiling?

Lamellow Spa — the dedicated system for wet and high-humidity environments. Standard Capax System and Capax MIX are not rated for these conditions and must not be used in wet rooms, bathrooms or spa environments. Lamellow Spa uses aluminium profiles with C3/C4 corrosion protection, tested for the specific moisture and load requirements of these spaces. It is suitable for both ceiling and wall applications and carries B-s1,d0 fire classification. Lamellow Spa installation guide →

Can Gustafs panels be reused if the space is reconfigured or refurbished?

Yes. All Gustafs solutions installed with Capax are available in fully demountable versions, and panels can be removed, relocated and reinstalled without damage. The fibre gypsum core is dimensionally stable and not sensitive to variations in temperature or humidity – panels will maintain zero-spacing joints when reinstalled with Capax profiles. Gustafs guarantees a minimum product lifetime of 50 years. A demountable ceiling is not just a maintenance advantage — it means the building material can follow the life of the space rather than ending up as waste.

Installation guides

Full documentation per system

Step-by-step installation instructions, technical drawings, component lists and handling requirements for every Capax system and product combination – Capax System, Capax MIX, Module-FS and Lamellow Spa.

View all installation guides

Project support

Speak to a local representative

Project-specific guidance on system selection, void depth, acoustic targets and fire classification – from early specification through to site support and installation sign-off.

Find your representative
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