These are solid and sized just right to do the job. Make sure you mount them with strong screws and a solid surface.

There's no better way to mount your lockbox to a wall. These brackets works well and are very sturdy.

If you're gonna go through the trouble of using a lock box, you should get these too. The brackets mount to the wall, the lockbox mounts to the brackets covering up the screws to the wall. You'd have to hit 'em with a hammer to bend them and if you did that you'd probably ruin the DVR anyway. Good product.