These shelves have the capacity for holding up to 30 pounds.
Most floating shelves have a maximum weight of ten kilograms. This, converted into the American standard pound comes out to a weight of about 22 pounds.
From http://www.chiefmfg.com/productdetail.aspx?ProductID=10772 ... the rack will hold a maximum weight of 175 lbs.
You can find bathroom shelves that are capable of holding a lot of weight at your local building center/hardware store. You will also find the required screw anchors and other material necessary for mounting the shelves.
In the United States anchors for wall shelves are rated in pounds. This weight is the amount that the anchor can fully hold. To be safe you should divide that value by 4 when installing shelves.
This particular mount has a maximum weight capacity reaching up to a whopping 160 pounds!
This wall mount shelf unit has a maximum weight capacity of 75 pounds per shelf.
The product's manufacturer rates the maximum supported amount of weight this rack can hold as 300 pounds.
This wieght lifting bar itself has a maximum lifting capacity of 1000Lbs.
The amount of weight you can put on decorative shelves will vary by the shelves as well as the fastners used to attach them to the wall. The product information sheet should provide some guidance for you. You also need to consider whether you are installing them on wall board or reinforced support. Be careful to not overload them.
According to product specifications, this stand can hold up to 125 lbs.
This weight plate tree has a maximum weight capacity of 300 pounds.
100 pounds maximum