Posted By:
Cobby33That the D350-1 (akin to M101-4) is the thinnest one (1-5/8"x3"). Looks like Old Carboard has the -1 as the -2. The D350-2 is 2"x3-1/4". Not sure about the -3, but I think it has the same dimensions as the -2 (the larger one).
I have 1916 for the -1; 1917 for the -2; and 1921 for the -3.