a first half-pipe shell having first and second longitudinal rims;

a second half-pipe shell having third and fourth longitudinal rims;

said first longitudinal rim comprising a first connector defining a first channel for receiving said third longitudinal rim therein;

said fourth longitudinal rim comprising a second connector defining a second channel for receiving said second longitudinal rim therein; and

a plurality of spacers in-between said casing pipe rims for supporting said carrier pipe;

wherein said first and second half-pipe shells are fitted over said carrier pipe with said third longitudinal rim inserted into said first channel and said second longitudinal rim inserted into said second channel, said third longitudinal rim is affixed to said first connector through use of at least one first fastener, said second longitudinal rim is affixed to said second connector through use of at least one second fastener, and said half-pipe shells are thus attached to one another thereby encasing said carrier pipe, and further comprising third and fourth half-pipe shell rims joined like wise together and connected with first and second half-pipe shell rims to further encase the carrier pipe.