60-62 vs 63-33 long step bedsides

[62lwbc10]

Hey what are the differences between the 60-62 bedsides (step) vs the 63-66 bedsides? I always thought 60-66 was the same and just noticed the label on my Mar-K bedsides says 60-62. Can you please let me know what the differences are and will the 60-62 long step bedsides work on a 66.

Thanks,
Mark

[Mack B]

I think the only difference is the location of the holes in the angle strip for the wood slats
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