Description for H sections: 1st internal Depth 'board size' - 2nd external widths - 3rd thickness | M = metres, mm = millimetres
H joint trim 5mm is often used for covering & joining boards & partitions. H joint trim 5mm has equal legs and can be used to join 5mm boards and panels. See also our range of H Joining Sections (Unequal) and our two-part H interlocking top & base. We use external grade rigid PVC material to manufacture H joint trim 5mm.