Borkum

Sections are 284cm long, 13 planks 27 x 110 mm per section, rounded top, each with two profiled grooves on both the front and back. Attached with galvanised screw nails. Two unilateral bevelled rails 40 x 70mm. Posts are attached with four angle brackets 40 x 40mm.

In untreated natural, pressure impregnated green (see illustration) or dip impregnated and in the following colours: Douglas Fir or glazed chestnut.