DetailsIMMIX® newel post. Quality newel post by Richard Burbidge pre-finished in a clear lacquer. This is a one piece newel post that supersedes the two piece newel base and newel post system, saving you time. A 4.5mm groove around the four newel post faces at the midway position accepts the new two piece base bracket (available separately). Overall dimensions: 90 x 90 x 1454.5mm. Richard Burbidge fitting instructions are included with the top rake connector.