*100% Iron, Hardware Only；Not included planks*Introduction: 3 Pcs,52" high, 5 Tier, about 12 " between each tier (excluding tees, elbows), Total Tall 52", 12" in between each tier, deep 12",Use Planks wide 10"; The bigest can place the board less than or equal to 12 Inch width; 1" pipe diameter; 15 Flange, 6 elbows, 9 tees, width can be customized according to their own ideas, but we do not recommend more than 60"; Material: iron, painted black matt; installation please Refer to our picture；*Applicable sites: If you only want the shelving unit to attach to the wall ,instead of the ceiling,Then our shelf is your perfect choice；Easy "do it yourself" project for your home or office. Each purchase will include all of the parts needed (pipes and fittings) to complete this unique open pipe shelf system.You can use it “DIY” your's bookshelf、kitchen shelf、bathroom shelf、flowers shelf、and so,add extra space；*Worked Great : A lot easier to hang than I thought it would be (since you have to attach shelves first).;Very easy to put together, assembled the entire unit; leveled and screwed in the top- then worked way down,Perfect fit ,leveled then screwed into the wall, perfect all around. The unit is very steady ,Worked great ! Definitely need better wall anchors though.