Ideal for ceiling or roof oblique mounting

Positives:
1. Portable in all allowances that can be adjusted einzelnd (even vertically inclined by 90 degrees no problem).
2. Easy to install in 5 minutes (2 Drill holes, screw, assemble, adjust -> ready)
3. All screws, dowels (for wood and concrete!) And tools (eg Allen key) included.
4. Exemplary Packaging and manual (all screws, dowels, etc. welded into blisters and with names that are correctly specified in the instructions)
5. Very stable (because nothing moves more when everything is adjusted and tightened - no play, no bending)
6. The flexible support arms on which the projector is mounted, the mount is virtually suitable for all projectors. There are several different screw sizes and lengths in that should fit most projectors. If you do not fit the enclosed screws, you could also use other screws (possibly with Unterlegschreibe with small screws).
7. Clean processing (no sharp corners and edges, clean finish or coating)

Neutral:
- Relatively heavy (estimated 2-3 kg). However, the mounting plate is relatively large (about twice the size of a coaster, so that the weight is well verteillt.)
- The design has been designed for very "schraublastig"; like most supports.
- Not adjustable in height. Would a "nice to have", but you can on those few centimeters height adjustment confidently renounce because you anyway must compensate on the Keystone setting the inevitable angle of the projector (a projection) in particular for ceiling mounting.

Conclusion:
For the price (I paid just under 30 euros) a very good product. More mount nobody needs.