Looking for the dust collector coming off of the blade.

It is the device having 3 screws which holds it in place. Left side has a fixed piece about 3" long, and on the right side has an additional piece the same length where the screws attach to it. The bottom has a flexible rubber piece acting as a scoop. Ridgid has no information any longer and cannot give me a model # for it.

any idea as to where I may be able to purchase it?