How much weight and TV size can a motorized fireplace mount actually handle?

Most motorized pull-down mantel mounts in this category top out around 77 lbs and 70–80 inches, including the Monoprice and MOUNT-IT! pull-downs. The MantelMount MM815 is the outlier at 115 lbs and 45–90 inches. Across retailer reviews, owners of 77-inch OLEDs report that the heavier-rated MantelMount handles those panels comfortably, while reviewers of lighter-rated motorized mounts caution against pushing close to the weight limit, especially with a soundbar attached.