Not good at all. The holes in the shelf didn't line up with the holes in the brackets. Fortunately I own a drill and drilled two new holes to affix the two brackets to the shelf. However the angle of the brackets meant that they wouldn't slide down in the space behind the radiator. Tried moving the brackets every which way and bending the brackets every which way but no luck. Ended up just resting the shelf on top of my radiator.