Quick video showing an installed projector mount made by Chief. If you want to order one, you will have to purchase all three parts as shown in the video. Links provided below.
https://www.bhphotovideo.com/c/product/537445-REG/Chief_CMS390_CMS390_On_Center_Ceiling_Plate.html
https://www.crutchfield.com/p_051RPMAU/Chief-RPMAU-Elite.html
https://www.crutchfield.com/p_051CMS6009/Chief-CMS006009.html
