U of S | Mailing List Archive | alt-photo-process-l | Stouffer 4x5 step wedges?

Stouffer 4x5 step wedges?

I've been meaning for the longest time to order some 4x5 transmission step wedges, and now that I've finally got around to it, I don't find them listed on the Stouffer price list. Anyone know anything about this? Am I just looking in the wrong place? Other companies that make 4x5 step wedges? Thanks,