A highly insulated aluminium window and door system combining exceptionally slim sightlines with the refined appearance of traditional steel-framed architecture.
Reynaers SlimLine 38 is a thermally insulated aluminium system for inward and outward opening windows and doors, developed to combine modern comfort with exceptionally slender architectural proportions.
Its refined profile geometry recreates the distinctive appearance of traditional steel-framed windows while providing the durability, insulation and technical performance expected from contemporary aluminium systems.
This combination makes SlimLine 38 particularly suitable for both modern architecture and renovation projects where narrow sightlines and visual authenticity are essential.
SlimLine 38 is available in three minimalist design variants, allowing the visible profile geometry to respond to the architectural character of each project.
Slender profiles with subtle inclined surfaces create an elegant interpretation of traditional steel-window architecture.
Ideal where heritage-inspired proportions need to meet contemporary thermal and weather performance.
Sharp straight lines and defined shadow gaps give the Ferro variant a strong industrial and distinctly steel-like appearance.
Particularly suited to industrial renovations, loft-style architecture and contemporary façades.
Stepped profile surfaces create a more geometric architectural expression while preserving the ultra-slim character of the system.
A refined option for modern buildings where clean geometry and precise detailing define the façade.
Ultra-slim inward-opening Classic sightline.
Large opening elements while retaining slim proportions.
Structural capacity for substantial glazed opening elements.
Supports advanced double and triple glazing configurations.
Narrow visible profiles create elegant proportions inspired by traditional steel windows without sacrificing contemporary comfort and performance.
Reduced visible aluminium creates refined window proportions and increases the visual importance of the glazing.
The steel-inspired profile geometry makes SlimLine 38 particularly suitable for refurbishment projects where the original architectural character must be respected.
Slim proportions and precise aluminium finishing make the system equally appropriate for completely modern residential architecture.
Glazing up to 55 mm allows high-performance insulating, acoustic, safety and solar-control glass specifications.
Core dimensions and performance values for the SlimLine 38 Classic window configuration.
*Performance and dimensional limits depend on profile combination, opening type, hardware, glazing, element dimensions and project requirements. The reference Uw value of 0.99 W/m²K published by Reynaers applies to a specific 1.23 × 1.48 m frame/vent element with Ug = 0.6 W/m²K, warm-edge spacer and 36 mm glazing.
Frame thermal performance down to 1.9 W/m²K depending on configuration.
High air-tightness performance tested up to 600 Pa.
Watertightness tested up to 600 Pa.
High resistance to wind pressure for demanding applications.
Acoustic reduction depends on glazing and element configuration.
Fibreglass-reinforced polyamide thermal breaks reduce thermal transmission through the aluminium profiles while preserving their slender geometry.
Glass thicknesses up to 55 mm allow advanced double and triple glazing configurations for thermal, acoustic, solar-control and safety requirements.
Appropriate profile, hardware and glazing combinations can achieve RC2 burglar-resistance performance where increased protection is required.
An architectural aluminium system developed around slim steel-inspired aesthetics and contemporary building performance.
Contact Mparolas for technical information, glazing options, Classic, Ferro and Cubic configurations and project-specific aluminium window and door solutions.
