22 3/4" long outer edge to outer edge.
See pictures for "fit". 
I cannot answer any "will it" questions.
Pictures must provide answer to any questions.

Look close at pictures for size.  Corrosion and chrome peeling - see pictures.  No hardware - riser only.  These are designed to attach to a Trac Rac rail 
T-Rac - the real thing - crazy expensive new.
No returns - shipping is way too expensive for errors.

As pictures show these are used - finish coming off.  Dinged.  Salt air corrosion.  Fully functional.  Not for the pretty truck boys.

Ready for more work.  If not clearly shown in a picture then "it" is not included - there are numerous accessories are available for these racks - I am selling just the bare racks.

shed blue,  blue bin