Dutch masters of steel since 1667
Dutch Masters of Steel since 1667


The world’s slimmest

Our thermally broken SL30-ISO-PLUS profile has all the fine qualities of our solid steel SL30-ISO® profiles – it is ultra-slim at 30 mm (1 3⁄16”), has the same exceptional contours, and offers the ultimate design freedom – but it is extra deep. SL30-ISO-PLUS profiles facilitate triple glazing, resulting in even better insulation and more strength.