Hello geniusmiki
I can't speak to those rails specifically because I don't know what they are. They don't look like the rails for this server, and that is not a Dell part number I am familiar with. Here are the rail depths for the ones we sell:
sliding: 714mm http://accessories.us.dell.com/sna/productdetail.aspx?c=us&l=en&s=corp&sku=330-6302
static: 622mm http://accessories.us.dell.com/sna/productdetail.aspx?c=us&l=en&s=corp&sku=330-6301
Thanks