Thanks much. Your suggestion led me to Ebay where I found a Uni Filter # 2203 that is an after market filter for the DT1's and DT2's. $29.95 plus $4.95 for shipping.
Thomas Correa
I have been searching for a replacement for my 1968 dt1 air filter, Yamaha FILTRON K205, but see that they are no longer produced. What can I use in its place? Thanks