IronRidge XR100 Rack Spacing

[LPG]

Anyone know if Iron Ridge has a best practices document for rack spacing on a module?

I'm looking for measurement W on the drawing below. I know it'll vary per module, i'm simply looking for a % of how far C shouldn't be from the edge.

[ButchDeal]

It will depend on the pv module. They all have spec sheets usually with a distance range that the rails should be within.

[LPG]

After much searching I was able to get the module installation sheet. For some reason they separated the spec sheet from the install sheet.

Thanks.