You know, maybe all the first aid kits have them... I have never opened one to look, truth be told. This one's sealed too, but I think the dimensions are printed on the back. I'll have a look when I get home (and post a pic too).

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1992 300D 2.5T
1980 Euro 300D (sadly, sold)
1998 Jetta TDI, 132K "Rudy"
1974 Triumph TR6
1999 Saab 9-5 wagon (wife's)