The screws holding the projector at an angle are not tight enough. There are no nuts in it. They are just metal threads. They come off very easily. There should be some nuts and bolts here, not just drilled holes with threads. Also: if you mount it on 2x rafters or on the floor, the mounting plate is not square. The holes are at the corners and the bottom bracket is diagonal to the rafter. There's enough flex on the underside to make it work, but it forces you to tighten the screws even more.
Wall Mount UltraMounts UM 832T, black
22 Review
🔦 Loutoc BL-FP230D Replacement Lamp Bulb for Optoma HD23 HD20 GT750E Projector (with Housing) – Optimal Performance Guarante+ed
10 Review
🔧 Premium Black Universal Projector Ceiling Mount by Kanto P101: Solid Steel Construction for Easy Installation
10 Review
🔆 High-Quality Replacement Bulb for Sony VPL-HW30AES/ES Projectors - EWO's LMP-H202 LMP-H201 Lamp Bulb
10 Review