Agree with previous speakers that support is for low ceilings due to their low design very well. However, the Assembly, as I can only add my voice to some opinions. There are a rapidly chilling one. This has permanent and unscrew until you finally get the correct position of the retaining arms found is very time and nerve-wracking. This could have been really solve different. If you have the time and survived the projector hangs and no longer need to fumble around to it, it served its purpose and for the price you can take the pounding assembly then somehow life. :-)
