If you were to walk into a high street store to buy a television bracket, they may only have a small selection of brackets on offer. High street stores do not have the storage facilities to store large quantities of television brackets because of the large number of different types available. This means that if you choose a television bracket from one of these stores, the likelihood is, it will not fit your TV.
Some brackets bought from retail outlets and DIY stores have information on the back of the box detailing the hole mounting spacing, and some even have details regarding which television they will fit. This information is by no means comprehensive however, and the only true way you can tell if one of these brackets will fit is to try to fit in on your TV, which can be difficult in the middle of the shop.
The best place to buy a television bracket is online using the detailed search criteria that some websites use to narrow down your options. Some websites let you choose the TV manufacturer, the size of the TV and even the model number, so you will be sure that the TV bracket you buy will fit your TV.