components of the panel 10 and these components can be extruded as a finished part with a base material for strength as well as a finished layer on the surface which is the final finish of the part and particularly compounded to be weather resistant including a high degree of resistance to sunlight and ultraviolet radiation the exact formulation of the vinyls and their method of extrusion are well known in the art and therefore will not be described in any greater detail herein the posts 11 and 12 may either be set directly in the ground or in concrete or if greater strength is required they may be fitted as covers over a wood or metal core extending into the ground alternatively the posts after setting in place may be filled with concrete in any case the posts 11 and 12 are covered by a decorative cap 13 intended to prevent any water from draining into the interior of the post and these cap 13 are usually glued in place with a suitable vinyl cement as shown in fig1 a plurality of brackets 14 are mounted on the inside opposing faces of the posts 11 and 12 to support the panel 10 brackets 14 may be identical with those disclosed in the present inventor 39 s u s pat no 5 938 184 granted aug 17 1999 in which is incorporated herein by reference the panel 10 is a unitary piece as shipped from the factory and is ready for mounting on the brackets 14 after they have all been secured to the posts 11 and 12 panel 10 includes three rail assemblies namely the top rail assembly 17 the.