here are some pictures of some bed rails i just finished for a forum member they are 48"long and 7"high. they are made with fome heavy iron just one side weighs about 30lbs this ain't no thin walled tubig. the side and top is mafe with 1"tubing and the bottom 1 1/2 angle iron . the exspansion metal 3/8. i can make them to whatever hieght is needed i can also make them this size with some mounting hole to add an section when extra hieght is needed. if you need to carry something like a chainsaw or weed eaters i have the attachments to mount to it to carry them.
http://imageshack.us/a/img171/5846/dscf6647.jpg
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http://imageshack.us/photo/my-images/607/dscf6662n.jpg/
http://imageshack.us/photo/my-images/403/dscf6664w.jpg/
http://imageshack.us/a/img171/5846/dscf6647.jpg
http://imageshack.us/photo/my-images/52/dscf6641d.jpg/
http://imageshack.us/photo/my-images/526/dscf6643.jpg/
http://imageshack.us/photo/my-images/801/dscf6639.jpg/
http://imageshack.us/photo/my-images/833/dscf6658m.jpg/
http://imageshack.us/photo/my-images/43/dscf6654.jpg/
http://imageshack.us/photo/my-images/13/dscf6650h.jpg/
http://imageshack.us/photo/my-images/259/dscf6651.jpg/
http://imageshack.us/photo/my-images/607/dscf6662n.jpg/
http://imageshack.us/photo/my-images/403/dscf6664w.jpg/