Material: Polished aluminum extrusion ushorizon.com +5 crlaurence.com +5 DK Hardware +5 Walmart +1 eBay +1 Sidewall thickness: Approximately 0.045″ (1.14 mm) DK Hardware Overall height: Approximately 1–3/16″ (30 mm) eBay +2 crlaurence.com +2 DK Hardware +2 Inside “J” dimension (channel opening): ~0.282″ (7 mm), meant for holding ¼″ (6 mm) mirror glass Bar width: ~0.372″ (9 mm) Length: 60″ stock length (with longer 144″ version also available