Use these high quality rustic copper ornamental brackets to fit a shelf of any length, spacing the brackets to suit wooden stud spacing in a cavity wall, or at a maximum of 50-60cm apart in a brick/cement type wall, with the shelf being fitted up to a maximum depth of 20cm for the best weight capacity . The brackets can be fitted onto gyprock sheet using 2 of these anchors . Use 2 per bracket, please note weight the capacity would then be dependent on the strength of the wall sheet, but expect up to 10kg per pair fitted correctly by an experienced shelving installer fitting a 600mm x 200mm deep or 800mm x 200mm deep sized shelf. Weight capacity of brackets decreases when fitting deeper shelves. Check out our Australian made plywood shelves or the European made vintage white pine shelves which look superb with these rustic copper brackets.