I purchased this mount for a 50" Samsung television. I did need to purchase longer screws to mount the rails on to the back of the television set. Those supplied were a good 15mm too short. It's understandable that there may be edge cases in screw length and less than $10 and a trip to Mitre 10 I had the correct screws. Very happy with the product, doesn't sag, though might if it was really extended outwards.