For those of you that may want to order a Bru-Line Air Filter for yourselves, here attached is a copy of the receipt I received from Prop Shop Hobbies (the place where "ALL" the Bru-Line Air Filters were built in the 80s. I would call Matt and talk to him to see if he is willing to build you a filter, or if he has the Course replacement filter elements if that's what you want. I know he has the Green Fine Filter Element material, and that's what I ordered from him (see receipt), but I don't know about the Course material's availability.
