Advantages 1.Universal Projector Mount:1. Flush Ceiling Installation, 2. Telescoping Arm Ceiling Installation, 3. Wall Installation. Fits the majority of projectors with three-hole and four-hole configuration on the market. This mount can be used on flat ceiling." 2.Full-Motion Design: Pitch: +/- 15 degrees, Roll: +/- 8 degrees, Height Adjustment (ceiling installation): 5 inches to 25.6 inches. Extension from the wall (wall mounted installation): 16.9 inches to 25.6 inches. 3.Easy to Install: Quick release hooks attach and detach by tightening and loosening the mounting bolts. All necessary hardware and instructions are provided for assembly. This mount does NOT support vaulted ceilings and walls. 4.Strong Support: Made of premium quality and heavy duty steel ,provide a reliable strength and support. Our products can bear the maximum support weight: 33 lbs / 15 kg, if used in large projectors, the mount may bend. 5.Cable management system: Helps keep cables concealed and organized. 6.Upgrade screw?The use of new hand-tightening screwsBefore buying this projector mount, Please check the following detail: This mount can be used on concrete and brick ceiling?Wood ceiling,Please check the wood studs on your ceiling. NOTE: does NOT support vaulted ceiling and drywall. Please check the weight of your projector, the projector weight should be less than 33lbs (15kg). Check the mounting holes on the top of your projector and measure the distance between each hole. Your projector VESA mounting hole must be between 8.9” to 14.9”. Install method: There will be detailed instructions for use, installation methods and precautions in our package, or you can refer to the display pictures of our products. Package Includes: 1 x Projector Ceiling Mount (black) 1 x installation instruction 1 x Standard Mounting Hardware