[Kmchamplin]

4 shelf Resign plastic up to 75 pounds each shelf $19.77 (doesn't say what the shelves are like ~ 34 1/4" W x 56 1/4 H x 14 1/2" D)
4 shelf Steel commercial up to 225 pounds each shelf $26.99 (these have particle board shelves ~ 36" H x 60" H x 16" D)
5 shelf steel muscle rack up to 500 pounds per shelf (these have particle board shelves~ 36"H x 72" H x 18" D)
4 shelf Wire up to 350 pounds $57.77 (this is huge ~ 48"w x 74" H x 18" D)
5 shelf industrial steel up to 1,000 pounds per shelf $73.98 with $5 mail in rebate (60"w x 72"h x 18"d)