SlimLine 38

Light, Elegance and Comfort

SlimLine 38 is a highly insulated system for inward and outward opening windows and doors, which combines elegance and comfort, with a unique design. This special slender steel look is the perfect solution for modern architecture and renovation of steel-framed windows, respecting the original design but offering a thermally improved solution.

The SL 38 system 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.


Min. Visible width frame: inward opening  33.5 mm 

Min. Visible width vent: inward opening  23 mm 

Min. Visible width frame-vent: inward opening  67 mm 

Min. Visible width frame: outward opening  29 mm 

Min. Visible width frame-vent: outward opening  80 mm 

Min. Visible width T-profile  48 mm 

Max. height vent  2800 mm 

Max. width vent  1200 mm 

Max. weight vent (element)  170 kg 

Overall system depth frame  99 mm 

Overall system depth vent  86 mm 

Rebate height  13.5 mm 

Min. Glass thickness  16 mm 

Max. Glass thickness  55 mm 

Min. Glass thickness vent  16 mm 

Max. Glass thickness vent  55 mm 

Glazing methodDry glazing with EPDM or neutral silicones  

Thermal breakFibreglass Reinforced Polyamide Strips  



Air tightness max. test pressure  4 (600 Pa)

Water tightness  9A (600 Pa)

Wind load resistance  C3 (1200 Pa)

Acoustic performance  45 (-1,-5) dB


Burglar resistance  RC2/WK2


Thermal insulation  (Uf)1,9 W/m²K