Probably wouldn't be cost-effective to ship to Shreekant in India. . . .
Shree, I have always been fascinated by the use of wood in instruments and I come from a long line of cabinet makers on my mother's side (and one of the best old world trained American pipe-organ builders was my five-great grandfather David Tannenberg) and wood in general fascinates me. I find these pages pretty darned helpful regarding the use of wood in instruments, which I think may parallel their use in an equipment rack:
http://tonewooddatasource.weebly.com/species--attributes.htmlhttp://www.ergcustomguitars.com/tonewood.aspLooks as if teak will work a bit like walnut, and I think that may make a nice, warm-sounding rack.
Padauk some don't recommended except for ornamentation or decoration, while others will say it's like maple and mahogany, which are great tonewoods. I guess the jury is out, but it's a beautiful wood and may make a great rack.
I think silver wood is what we call silver oak, and that seems to be a very balanced sounding tonewood, and easy to work with. It might make an excellent rack.