Series A - Frame any 1/2" Best-Rite surface with our contemporary anodized aluminum trim. The durable 7/8"W x 5/8"D metal trim and accessories are fabricated from an aluminum alloy that is etched and anodized with a standard, clear satin finish. Choose from a standard solid extrusion accessory tray or optional hollow section box tray with round front edge, both with DuraSafe end caps, is included with boards that have a writing surface. Best-Rite always provides straight, single lengths wherever possible, keeping joints to a minimum. Mitered corners feature a neat, hairline closure. For boards with a writing surface, choose from a full length 1"H or 2"H map rail with a cork insert.