Amazon.com: ALZO Short Suspended Drop Ceiling Video Projector Mount with Scissor Clamp for T-Bar Attachment with 10 Inch Drop : Electronics
Commercial Electric 4 in. Round 2-1/8 in. Deep 21.5 cu. in. Metallic Ceiling Fan/Light Fixture Box and Brace Kit for Suspended Ceilings CMB218-SC - The Home Depot
Suspended Ceiling Mount Tile & 12' Pole Kit - Clinton Electronics