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Efficient installation of windows and doors – save time and reduce errors

Proper leveling of windows and doors ensures a stable and long-lasting result.

With Knudsen Kilen Fix Shims, Hanger Shims, and Shims, elements can be easily adjusted to perfect level, reducing errors and making installation faster and more efficient.

Fix Shims and Hanger Shims are especially essential on vertical surfaces. They stay on the screw, don’t fall during work, and can be combined in different thicknesses for precise height and spacing.

K-Block 45/45C spacer block is ideal for heavy and demanding tasks. With a load capacity of 2,000 kg, grip tabs, and countersunk screw holes, they provide stability and durability.

K-Wall window fitting is the smart solution for modern masonry, where insulation materials demand stronger window fittings without creating thermal bridges.

The products are resistant to moisture, rot, and fungus, and have a documented lifespan of at least 75 years.

All products from Knudsen Kilen designed for easy mounting of door- and windowsills

  • Fix Shim, blue 1 mm

  • Fix Shim, black 2 mm

  • Fix Shim, red 3 mm

  • Fix Shim, white 4 mm

  • Fix Shim, yellow 5 mm

  • Fix Shim, brown 10 mm

  • Fix Shim, orange 12 mm

  • K-Block 45C, red 3 mm

  • K-Block 45C, brown 2 mm

  • K-Block 45C, orange 5 mm

  • K-Block 45C, blue 20 mm

  • K-Block 45C, yellow 10 mm

  • K-Block 6T, green 2 mm

  • K-Block 6T, grey 3 mm

  • Wedge, Orange

  • Wedge, Green

  • K-Block 6T, white 5 mm

  • K-Block 6T, blue 10 mm

  • K-Block 6T, black 20 mm

  • Knudsen K-Wall 28i (building-in)

  • Knudsen K-Wall 50i (building-in)

  • Knudsen K-Wall 28e (retrofitting)

  • Knudsen K-Wall 50e (retrofitting)

  • Hanger Shims, blue 1 mm

  • Hanger Shims, black 2 mm

  • Hanger Shims, red 3 mm

  • Hanger Shims, white 4 mm

  • Hanger Shims, yellow 5 mm

  • Hanger Shims, brown 10 mm

  • Shim 50, blue 1 mm

  • Shim 50, black 2 mm

  • Shim 50, red 3 mm

  • Shim 50, white 4 mm

  • Shim 50, yellow 5 mm

  • Shim 100, black 2 mm

  • Shim 100, blue 1 mm

  • Shim 100, red 3 mm

  • Shim 100, white 4 mm

  • Shim 100, yellow 5 mm

Leveling of doors and Windows
Leveling of doors and Windows
Leveling of doors and Windows
Knudsen film: K-Wall instruction (Danish)
Knudsen film: Knudsen Kilen - Products and usage
EPD Verified
80% range in recycled raw material
75 års minimum levetid
Danish design & quality