How cut bars from 10" x 3 5/8" x 2.25" loaf?

[QuanahRose]

This is a blue silicone mold with ribs on the outside (from Brambleberry).

I'm not sure how best to cut bars. 1x5x2.5 seems an odd size to me.

Any ideas about other options would be appreciated.

TIA

 

[BrewerGeorge]

Like a meatloaf in 1in slices.