Does such a thing exist? I have an old durst that has a 2 3/4" Filter drawer that I would like to use as a 2nd enlarger but can't find multigrade filters for it anywhere.
I reckon the most economical thing to do would be to cut down the 3" filters. Take 1/4" off 2 sides and be careful not to cut off the edge with the filter number embossed on it.
I have sets of Multigrade and Polycontrast filters in mounted and unmounted 2-3/4" sizes for my old Durst M-300 but I don't know where to get more now other than to cut down 3" filters. 1/4" isn't much to remove. I'm still using the filters so mine aren't for sale but I bet someone has some they aren't using.
Three inch Multigrade filters are easy to come by. Sourcing them form your usual supplier shouldn't be a problem. I used a paper cutter to cut down a set for my Omega B600.