Fulfillment by Amazon (FBA) is a service we offer sellers that lets them store their products in Amazon's fulfillment centers, and we directly pack, ship, and provide customer service for these products. Something we hope you'll especially enjoy: FBA items qualify for FREE Shipping and Amazon Prime.If you're a seller, Fulfillment by Amazon can help you grow your business. Learn more about the program.When PR05 leave our factory, the screw on the extension pole is not fully tightened, which is to prevent the customer from scratching yourselves by pulling the extension pole forcibly. Please do tighten the screw on the extension pole and the base during your installation. Suptek PR05WILL NOT work for your projector, if your projector has holes on the diagonal more than 12''/30. 5cm apart or weighs more than 30lbs/13. 6kg. Please check specifications to see if this mount is compatible with your projector. SPECIFICATIONS: 1. Maximum weight supported: 30lbs/13. 6kg2. Height adjust from 10. 62'' to 21. 25'' (27 - 54 cm). 3. Ceilings Supported: Regular ceilings (drywall or wooden beams)4. Heavy duty aluminum alloy construction5. Color: White6. Adjustments: Tilt Range 90° up/down; Pan/Swivel Range 360°. Note: This mount does support the vaulted ceiling/wall. *3-YEAR ; If you have ANY issues, please contact us.