I have heavy wood shelves about 1.25" thick and extend 11" from the wall, with differing lengths ranging from 34" to 100". I've noticed that even shelf brackets that are even 5-6"L have a high weight capacity but are much cheaper than 10-11"L brackets. These are for the kitchen so will be holding dishes.
Are there any fast rules for how close in size the bracket and shelf should be?
If not, what is the shortest bracket length that is acceptable or should I not worry about length and just look at weight capacity?