Ceiling installation is made simple with the optional already assembled HD commercial SkyVue ceiling mount, delivering the ultimate in positioning options with a uniquely engineered SkyVue swivel system. If you are going to do a lot of swiveling with your SkyVue Outdoor Television mount, this is a good product and provides 330 degrees of swivel. Easy to install. Note: When electing to use this great swivel device for SKYVUE ceiling mounts, be sure to add 5" more clearance to the distance (clearance) from the top of the SkyVue LED Outdoor Television to the ceiling. See ceiling mounts in accessories for specific dimensions for each size.