Need help bb spindle length see above post.

I bought a pair of used paul single speed disc hubs. What are the replacement bearing numbers for these. Quality bike catalog at LBS has there own numbering.

Number on bearings are: 6903LLB ENDURO CARTRIDGE BEARING These bearing have a blue cover . The web sites show a red cover on the bearing the "LLB" is not listed ??????????????

I will email Paul on Monday Morning, but i do not know how helpful he will be since I bought the products used.

Please help?