of the same curvature as the exterior surface 42 of the plastic shield 34 so that the two components meet in a smooth junction turning next to fig3 there is shown a cross sectional view of a side rail 44 that again is constructed of two angle irons 46 48 secured together as can be seen the combined angle irons 46 48 forms an overlapping horizontal flange 50 and a combined adding vertical flange 52 that is twice the length of a vertical flange of the angle irons 46 48 a plastic shield 54 fully surrounds the cross section of the side rail 44 such that the metal side rail 44 is completely covered and thus the cold steel or other metal is easier to handle and is more esthetically pleasing in the orientation of fig3 the plastic shield 54 has an exterior portion 56 that is held away or displaced from the vertical flange 52 by means of ribs 58 60 and which can be molded into the plastic shield 54 since the plastic shield 54 is in the embodiment of fig3 unbroken it can be slid along the longitudinal length of the side rail 44 in order to install the plastic shield 54 to the side rail 44 turning next to fig4 there is a cross sectional view of a cross rail 62 that is again made up of two angle irons 64 66 that are secured together in this embodiment since the bed frame component is a cross rail the cross rail 62 is oriented such that.