Peerless-AV Peerless PAP-252 Projector Adapter PlateOverview Specifications Projector adapter plates that are either universally compatible with most projectors, or uniquely compatible with one projector make or model. Peerless adapter plates for projectors allow users to choose between Peerless' wide array of applications and accessories to mount a projector anywhere. Most models feature security fasteners for theft resistance, and flip down hinges that allow easy access to the projector for