The 300mm board contains two 15mm wide grooves. The groove begins with a sharp 5mm groove. The groove has a flat 10mm base before it is followed by another sharp 5mm rise, which meets with the woodsman surface. When the following board is placed above the previous, the second groove is complete.
Curved walls up to a 2.5m radius can be achieved for Selflok.
Dimensions: 3660mm x 300mm
Thickness: 9.5 mm
Weight per board: 10.6 kg
Bal Rating: 19