The RPA000 is the top assembly only. For the interface bracket that attaches to your projector see SLBUW (universal) or use Chiefs MountFinder to determine which model number matches your specific projector.
Specification:
Product Type: RPA Top
Color: White
Width: 6.50 Inch
Depth: 5.50 Inch
Height: 1.80 Inch
Specification:
Product Type: RPA Top
Color: White
Width: 6.50 Inch
Depth: 5.50 Inch
Height: 1.80 Inch