I found THE ARC...shower rod...produced by Focus Hospitality Products. They do not sell to the public, nor does WebRestaurant (which requires a purchase of a dozen of them) ... this leads to my continued search ... I emailed WebRestaurant to inquire about mfg. of product...was advised it is a Focus product.
Amazon has, what appears to be the ARC Brushed Stainless Steel.
photo of Amazon ad attached K
Also found it at ShowerRods.com