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A receiver assembly includes a central frame member including a hitch receiver box, a pair of mounting brackets carried on the central frame member, a pair of accessory receivers carried on said central frame member and a vehicle body guard mounted in the pair of accessory receivers. The vehicle bod

A receiver assembly includes a central frame member including a hitch receiver box, a pair of mounting brackets carried on the central frame member, a pair of accessory receivers carried on said central frame member and a vehicle body guard mounted in the pair of accessory receivers. The vehicle body guard is a continuous tube shaped so as to project above the hitch receiver box so as not to interfere with hitch bar or draw bar connection in that box.

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A receiver assembly includes a central frame member including a hitch receiver box, a pair of mounting brackets carried on the central frame member, a pair of accessory receivers carried on said central frame member and a vehicle body guard mounted in the pair of accessory receivers. The vehicle bod

A receiver assembly includes a central frame member including a hitch receiver box, a pair of mounting brackets carried on the central frame member, a pair of accessory receivers carried on said central frame member and a vehicle body guard mounted in the pair of accessory receivers. The vehicle body guard is a continuous tube shaped so as to project above the hitch receiver box so as not to interfere with hitch bar or draw bar connection in that box. ernally threaded metal inserts are formed of brass. 13. The fitting of claim 1, wherein the polymeric body comprises polybutylene. 14. A fire sprinkler piping system fitting, comprising: a polymeric body extending along an axis, the body having first and second branches disposed along the axis, the distal ends of the first and second branches having a pair of internally threaded portions being spaced apart along the axis between three and four inches and adapted to receive respective sprinklers disposed generally on the axis so that when the body is disposed between spaced walls, a deflector of each sprinkler projects from a respective surface of the spaced walls opposite a wall surface exposed to the body, and a third branch extending generally perpendicular to the axis, the third branch having an internal bore to receive an outer end of a length of pipe. 15. The sprinkler fitting of claim 14, wherein the pair of threaded portions further comprise metallic annular inserts being provided with pipe threads formed on each insert. 16. The sprinkler fitting of claim 14, wherein the threaded portions further comprise 1/2 inch--14 NPT threads. 17. The sprinkler fitting of claim 16, wherein the distance between threaded portions comprises a distance of approximately 35/8 inches. 18. The sprinkler fitting of claim 14, wherein the internal bore of the body is adapted to be coupled to a fluid supply pipe. 19. The sprinkler fitting of claim 14, wherein the bore portion includes an annular shoulder located within the bore portion. 20. The sprinkler fitting of claim 14, wherein the body further comprises a fourth branch extending in a direction collinear with the third branch, the fourth branch having an internal bore to slidingly receive an outer end of a length of pipe. 21. The sprinkler fitting of claim 20, wherein the body further comprises a generally smooth internal bore extending from distal ends of the third and fourth branches with annular shoulder bore portions disposed in the smooth internal bore, the smooth internal bore having a larger opening than the annular shoulder bore portions. 22. The sprinkler fitting of claim 14, wherein the polymeric body comprises one of chlorinated polyvinyl chloride and ploybutylene. 23. A sprinkler assembly adapted to be coupled to a fluid supply, the assembly comprising: a fitting having a polymeric body extending along an axis, the polymeric body including first, second and third bores, the first and second bores extending generally along the axis and the third bore extending generally perpendicular to the axis, the distal ends of the first and second bores being spaced at a distance between three and four inches and having respective internally threaded portions; and a pair of sprinklers, each sprinkler having a frame, a deflector, and an end being coupled to a respective one of the threaded portions, the frames being disposed generally along the axis so that when the polymeric body is disposed between spaced walls, the deflectors of the sprinklers projecting from respective wall surfaces of the spaced walls that are opposite wall surfaces exposed to the body. 24. The sprinkler assembly of claim 23, wherein the threaded portions further comprise metallic annular inserts being molded to a respective one of the first and second bores of the polymeric body. 25. The sprinkler assembly of claim 23, wherein the polymeric body comprises one of chlorinated polyvinyl chloride and ploybutylene. 26. The sprinkler assembly of claim 23, wherein the fitting further comprises a fourth bore extending in a direction collinear with the third bore he fourth bore having an internal bore to receive an outer end of a length of pipe. 27. The sprinkler assembly of claim 23, wherein the internally threaded portions comprise approximately 1/2 inch--14 NPT threads. 28. The sprinkler assembly of claim 24, wherein the spaced walls comprise confronting wall surfaces spaced apart by a two-by-four member. 29. A fi