cero IV sliding door
Winner of an 'Excellent Product Design' award from the German Design Council for the outstanding and exemplary design achievements of the cero IV
The cero IV sliding window from Solarlux impresses with a special transparency that makes the glass almost invisible. This allows daylight to penetrate the building even better, making interiors appear even brighter.
Takes high-quality, sophisticated building projects to the next visual level: the stunning bespoke thermally insulated aluminium profile system benefits from 40 years of Solarlux experience in customised glass solutions, guaranteeing precision, innovative technical details and a discerning design - exclusively 'made in Germany'.
Dimensions and build
- Max element area
- 12 m²
- Sight line, top and bottom
- 15 mm each
- Sight line, vertical
- 2 mm in the panel joint
- Max panel weight
- 1,000 kg
- Thermal transmission coefficient
- Uw up to 0.9 W/m²K
- Frame position
- Can be set flush into the ceiling
Glass, seals and build
- Triple glazing option reaching Uw values around 0.9 W/m²K
- Structural glazing effect makes the forend almost completely invisible
- Even greater transparency than cero II and cero III
Performance figures
Certified performance figures for this system. Data sheets, CAD details and test certificates are available on request.
- Max panel size
- 12 m²
- Thermal transmission coefficient
- Uw up to 0.9 W/m²K
- Water tightness
- Up to class 9A
- Air permeability
- Up to class 4
- Max panel weight
- 1,000 kg
How this system is put together
The individual components and details that decide how a system performs over years of use.
Structural glazing effect
- Top and bottom sight lines of only 15 mm each
- Vertical sight line of just 2 mm in the panel joint
- Glass area takes centre stage with the frame set flush into the ceiling
Carriage and drive
- Stainless steel carriages and running tracks for smooth, low-wear gliding
- Optimised and even load distribution
- Optional electric drive for automatic operation
Security
- 2-point locking rod with adjustable locking points
- 24 mm latch bolt as standard in the top running track and guide rail
- Electro-mechanical locking elements with a fingerprint sensor option
Automation
- Laser scanner stops the opening or closing sequence if the path is obstructed
- Fully automated operation including electro-mechanical locking
- Interdependent control of multiple panels
What this system gives you
- Wing sizes up to 12 m²
- 2 mm vertical profile width in the panel joint
- Passive house suitability
- Flush floor track options
- High-performance thermal insulation
What you can specify
Security & certification
- Burglar resistance RC2 and RC3 available
- 2-point locking rod with adjustable locking points and a 24 mm latch bolt
- Water tightness up to class 9A, air permeability up to class 4
Options
- Elements up to 12 m² and panels up to 1,000 kg
- Motorised drive with optional electric locking
- Ground plans including flush-fitted, multi-track and corner situations
Finishes & materials
- 30 RAL colours as standard, plus DB powder coating and Eloxal
- Flush ceiling frame to hide the surround
- Award-winning design: German Design Council winner 2024
System details designed to impress
Structural glazing effect
The most minimalist profile view in the cero range.
98% glass
A symmetrical, minimalist design dominated by the glass itself.
Certified safety
Panel sizes tested and certified to the highest safety standards.
More cero sliding windows
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cero IV questions
The figures and the practical points behind the cero IV, answered as our team would answer them.
Sliding Doors Design and Budget Guide
Minimal frame aluminium sliding doors: layouts, glass specifications, installation planning and how to compare quotations like for like.
- Planning the opening
- Glass and thermal comfort
- Thresholds and drainage
- Budgeting the whole package
Talk to our team
Tell us about the opening, the room or the building. Whether you are a homeowner, contractor or architect, we will shape a system around your project and guide you from first specification to final installation.
- 01
- Tell us about the project
The opening, the room, the building and the look you are after.
- 02
- We review the details
A specialist checks dimensions, performance needs and feasibility.
- 03
- You receive a proposal
Specification, drawings and a quote, with installation planned end to end.