Spline cars?

[Approach_Medium]

Hi;
Can anyone tell me what those flatcars with the center spline, usually for lumber, etc are called on DLS?
I see a lot of them on CSX in NJ, USA.

Thanks

FW

 

[Rougespear7mm]

Centerbeam...

 

[Approach_Medium]

Thanks.
I'm not sure where I got spline from. Maybe some of the cars in DLS were named such.

FW