SlimLine 38

SlimLine 38

SlimLine 38 aluminium window

Light, Elegance and Comfort

Slim Line 38 is a highly insulated aluminium window that is suitable for inward and outward opening, which combines elegance and comfort, with a unique design. This special slender steel look is the perfect window for modern architecture and renovation of steel-frames, respecting the original design but offering a thermally improved solution.

The SL 38 window is available in 3 different minimalistic design variants, Classic, Ferro and Cubic, to perfectly match the architectural aspect of the building. The windows and doors can be provided with double and triple glazing without losing the ultra-slim look.

In combination with its superior insulation capabilities, the system provides the perfect harmony between durable material, clean design and demanding architectural challenges.

Fire Rating
The UK only recognises E & EI rating for Fire Products. The SL 38 suite carries an EW 30 rating. Please note that we do not recommend the use of this product in a fire rated application. Please refer to Reynaers Technical Department in Birmingham, UK for full details of our Fire Products range. Call the office on + (0)121 421 1999 or email



Between countries, there are differences in how a window is placed into the wall. For more information on the usage of Reynaers BIM models, download the BIM guidelines.


The Architect Catalogue (PDF) contains information and filenames of the individual CAD files. Please consult this document to find the required CAD files for every section.

Technical information


Min. Visible width frame: inward opening33,5 mm 
Min. Visible width vent: inward opening21,5 mm 
Min. Visible width frame-vent: inward opening67 mm 
Min. Visible width frame: outward opening29 mm 
Min. Visible width vent: outward opening60,5 mm 
Min. Visible width frame-vent: outward opening80 mm 
Min. Visible width T-profile48 mm 
Max. height vent2200 mm 
Max. width vent1600 mm 
Max. weight element170 kg 
Overall system depth frame99 mm 
Overall system depth vent86 mm 
Rebate height13,5 mm 
Min. Glass thickness16 mm 
Max. Glass thickness55 mm 
Min. Glass thickness vent16 mm 
Max. Glass thickness vent55 mm 
Glazing methodDry glazing with EPDM or neutral silicones  
Thermal breakOmega and/or hollow chamber –shaped fibreglass reinforced  


Air tightness max. test pressure4 (600 Pa)
Water tightness9A (600 Pa)
Wind load resistanceC4 (1600 Pa)
Acoustic performance45 dB
Burglar resistanceRC 2/WK 2
Thermal insulation (Uf)1,9 W/m²K

Opening elements

  • FixedFixed
  • Inward opening combined elementsInward opening combined elements
  • Inward opening double casementInward opening double casement
  • Inward opening turnInward opening turn
  • Inward opening turn tiltInward opening turn tilt
  • Outward opening TurnOutward opening Turn
  • Round window fixedRound window fixed
  • Inward opening tilt turnInward opening tilt turn
  • Outward opening Top hungOutward opening Top hung

Compatible handles