Designed for entertainment centers or computer terminals, these Full Extension Television Swivels have a dynamic load rating of 132 lbs./60 kg. The television swivel platform is 28-3/8" W size (recommended for Up to 60 inch tv). The TV swivel features ball cage guided runners for smooth and quiet operation, and made of durable, long-lasting steel.. Not for use for flat screens. To use for flat screen tv, you would need to secure the base of the flat screen down to the shelf used on this tv mount Note: Depending on installation and where load is actually placed, the weight rating can change (leverage effect). For commercial use, please conduct your own test. Mounting to shelf (slides) must be done with through-bolt.