Dimensions for Mike's battery holder?

[cart213]

Could someone who owns one of Mike's lipo battery holders please tell me its exact inner dimensions (length and width)? I know that it's designed to hold the 5000mah Enerland packs, but I want to use something else, so I need to know the exact dimensions to see if my battery will fit.

Here's the holder I'm referring to:

http://www.rc-monster.com/proddetail...MFPbatterytray

Thanks!