RPD12FS - Full sphere 12" diameter 360º viewing area with interior camera mount. (Drop down pipe is not included). Used for a panning camera.

RPD12W - Full sphere 12" diameter with a fixed viewing window. Interior camera mount included. For a fixed view camera.

RPD12D - Full sphere 12" diameter dummy lens smoked. Does not include the interior camera mount. Looks like the housings with cameras. Used as an extra deterrent against theft.