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Slim, Strong, Insulated.

Thanks to these unique properties, architects can enjoy the freedom to incorporate large areas of glazing into their designs.

Ideal for new, contemporary designs, but also used to renovate historical buildings that do not meet today’s technological performance standards. Thanks to MHB’s window systems, heritage buildings can be made future-proof while still maintaining their authentic character.

SL30 ISO lock system

System key features



T-shaped profile made of steel or brushed stainless steel with 30 mm sightline.
SL30-ISO® has a depth of 80 mm and allows double glazing for highly glazed panels. SL30-ISO-PLUS® has a depth of 100 mm and can be fitted with triple glazing for an even better insulation performance. 

Thermal insulation (according to EN 10077-1/2)

The total thermal insulation of a window or door is determined by the U-values for the profile and the insulated glass unit. 


Fixed glazing:

SL30-ISO® Ugl 1.1 Ugl 1.0  
1200 x 1500 mm Uw 1.32 Uw 1.21  
5000 x 2500 mm Uw 1.23 Uw 1.13  
SL30-ISO-PLUS® Ugl 0.9 Ugl 0.7 Ugl 0.5
1200 x 1500 mm Uw 1.11 Uw 0.93 Uw 0.75
5000 x 2500 mm Uw 1.03 Uw 0.84 Uw 0.65

ResizedImage259168 details SL30 ISO SL30 ISO PLUS cms EN

Wind and water tightness 

All MHB products comply with:
  • class 7A - 300 Pa of EN 12208 for water tightness
  • class 4 of EN 12007 for wind tightness
MHB can guarantee the maximum performance values based on European standards and certification if mentioned explicitly beforehand in the product specifications. 
Water drainage
Thanks to the fully integrated water drainage system and superior sealing components, we can create a perfect wind and water tightness without any visible openings or rain caps.

Divided lites and Glazing beads


Glazing beads

We use different glazing bead systems:
- L-shaped glazing bead with no visible connections
- Triangular glazing bead
- L-shaped glazing bead with visible connections


Divided lites 

TDL - True Divided lites  
The window is divided into several smaller glass panels separated by steel profiles.

TDL Glaslattenen roedes EN


SDL - Simulated Divided lites 
Muntins and grilles are placed on both sides of the glass panel this solution offers better insulation and for casement windows it increases the stability.


Glaslatten en roedes EN 2

SL30 ISO-insulated steel profile - project Loo

Further information

If you need information, a quotation or would like advice regarding design requirements, we kindly invite you to contact us through this contact form.

Head Office

MHB bv
Postbus 6
6674 ZG Herveld
Onderstalstraat 3
6674 ME Herveld

T: +31-488-451951

Company registered in the Netherlands
at the Chamber of Commerce in Arnhem
No. 10023479 

Our partners

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MHB b.v.
Onderstalstraat 3 | 6674 ME Herveld | the Netherlands | T: +31 488-451951 | E: | Ch. of Com.: 10023479