This same unit is available from most skid steer dealers, regardless of brand. I originally thought I would have to buy it through Bobcat, since Erskine was owned by Ingersol Rand, Bobcat's parent company, at the time. Since then Erskine has regained their independence from IR.
I originally tried to order through Bobcat, but they directed me back to Cat stating the blower would arrive calibrated to a Bobcat where Cat would get it calibrated to my machine. One instance where the attachment is not readily exchanged between brands.