The width of the parts I received is a little wide. (Approximately 35.25mm.) I bought these rails for a Raspberry Pi case that I downloaded from Thingiverse and printed. The rPi case fits nicely on the DIN rail I have at work from Phoenix Contact, but the case doesn't fit on those rails without a struggle. (A standard Phoenix Contact housing fits easily on these rails. For comparison, the width of a Phoenix Contact DIN rail is approximately 35.1 mm.)
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