what type of material are the supports made of.
1606252
The main pole and supports are a light aluminum. It's not the most study stuff but it's fine so long as you don't leave it open in the wind. It's thin gauge aluminum.
1898027
The material is a dense, plastic foam. They are very light weight and work well.
1374932
They seem to be coated with of some kind of hard rubber-like material, (really sturdy), but I wouldn't know the actual compostion.
378476
It's made of card board type material. But very thick at all but serves the purpose of light support for my mattress.
1254153
They are a plastic composite, extremely sturdy/solid and attach to the frame by way of a grommet, if I recall correctly. I bought two frames for my daughters and have had no issue with either frame. I am actually considering buying one for myself as they seem to handle my size (6-2, 225 lb) no problem.
1323788
They are made of lightweight reinforced polymer. Very strong and reliable! Hope this helps.
1842108
the shelves are made of plastic the support poles are made of aluminum. I believe the caster wheels are steel. the wheels would be the only susceptible part to moisture. the shelves are thin and won't support much weight.
1123763
They are made out of cloth, but they do stand up pretty well on their own. They are pretty sturdy..
1191100
They're made of metal. Very sturdy, and you can do one handed manipulations very easily.
736345
500 lbs.The main support is made out of steel. The carrrier is made out of aluminum. A well made product. You have to assemble it yourself. Takes a little over an hour.
540957
They seem to be made of a foam type material that are semi flexible. In Venezuela it is known as a material called foamy.
1483110
They are made of nylon which is narrow but strong. We have been very happy with it.
599920
There are two stays that you put in the upper section. One set is metal for firm support and the other is plastic for flexible support.
2007480
They are made of heavy duty plastic, very sturdy, a snap to put together and made for outside use in all weather conditions. I weight well over two hundred pounds and use the steps to get in my spa.
1125093
I believe there aluminum. they're very strong I'm 215 pounds in a hold my weight
415370
The poles are tubular metal. The shelves are heavy wire, coated with plastic. We had a problem with some of the plastic support pieces that hold the vertical poles together, and on which the shelves rest. The poles are inserted into these brace pieces, and some of the brace pieces broke or cracked. I must say, though, that customer service was extremely helpful and replaced everything. We also had a zipper get stuck on the flower house itself, and they took care of that as well. I think they have since upgraded the pieces that caused us a problem. If I recall correctly, they had changed suppliers and that didn't work out well for them, so they changed again. Hope this helps.
1122048
I believe it is made of PVC or some other high density plastic - pretty sturdy. They actually come with enough spacers to three large rows or three small rows or any combination of three...ex...2 small and one large.Hope that helps.