Reynaers SlimLine 38
SlimLine 38 was developed for contemporary architecture built around large areas of glass. It is also ideal in the renovation of industrial buildings, since it keeps the traditional look of steel windows.
The system’s versatility comes from three aesthetic profile variants — Classic, Ferro and Cubic — whose frames, sashes and transoms can be combined with one another.



















Technical characteristics
Reference figures for the system, measured in the laboratory and confirmed in our own production.
* Uw quoted for the 1230 × 1480 mm reference window in the best thermal variant. Tested classification: air Class 4, water Class 9A, wind Class C3. Also available in a thermally broken version.
Window options
Three aesthetic variants of the same system. Frames, sashes and transoms can be mixed between variants to reach the configuration you want.
ClassicA straight, discreet line — the base variant of the series
CubicSharp edges and a cubic read, for contemporary facades
FerroA design that echoes steel joinery, suited to industrial refurbishmentProfile section
Five junctions of the system to scale: frame, sash, glazing and seals. Click to enlarge.
Thermal performance
Uw de 0,96 W/m²K in the best thermal variant and a Uf of 1,9 W/m²K. Accepts glazing units up to 55 mm, allowing double or triple glazing according to the thermal and acoustic requirement of the opening.
Applications
Openings where the visible section is the main criterion: minimal-sightline windows in contemporary houses and industrial refurbishment.
Finishes
Powder coating across the full RAL range with Qualicoat certification, anodised and textured finishes, dual colour (a different colour inside and out) and wood effect. Sobinco tilt-and-turn hardware.
Frequently asked questions
Quick answers to the most common questions about Reynaers SlimLine 38.
What is the thermal performance of Reynaers SlimLine 38?
With the glazing stated in the datasheet, Reynaers SlimLine 38 reaches a Uw of 0.96 W/m²K on the 1230 × 1480 mm reference window (Ug = 0.5 with an Ultimate spacer) in the best thermal variant. We state the exact Uw for your opening in the quote.
What are the maximum dimensions?
Maximum dimensions depend on the opening type and the weight of the glazing chosen; our team confirms them at the survey stage.
Which colours are available?
Powder coating in any RAL colour, plus anodised, textured, dual-colour or wood-effect finishes, with Qualicoat certification.
What is the lead time and the warranty?
Manufacturing typically takes 4 to 6 weeks after the survey and order. Installation is carried out by our own team and the system carries a 10-year warranty.






