HSL Group briefly in English


HSL Group specializes in manufacturing and installing premium-quality modifiable partition walls, and we are one of the leading companies in our field. We are part of Harjavalta Oy whose other well-known brands include Puustelli kitchens and Kastelli houses. Harjavalta Oy’s turnover in 2014 was 240 million euros.

Our product range consists of walls made of wood, aluminium, glass, and traditional and sliding doors. Our products are used for example in offices, schools and libraries – basically anywhere where the demands of individual design and high-quality meet. Easy re-positioning of the walls is a key element, and we also offer you the service for making the desired layout changes happen.

Our customers and affiliates include building contractors, building / property owners and developers, architects and end users.

Our core values are high-quality, cost efficiency and care for the environment.

Please contact us for more details!


Lemuntie 3-5
00510 Helsinki
+358 10 277 6500
+358 3 718 8213
Sales: myynti@hslgroup.fi / Management of the sound: aani@hslgroup.fi
VAT number 2811546-7

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