The Von Duprin 210K R SP28 knob trim is an exterior accessory designed for use with Von Duprin 22 Series rim exit devices. This trim provides keyed access from the outside, functioning as a classroom or night latch type (ANSI Function 08), where a key locks and unlocks the exterior knob. It includes a 6-pin Schlage C keyway cylinder for integration into keying systems. The escutcheon plate is constructed from 10 gauge steel, and the trim features a Schlage "A" orbit knob. The finish is Sprayed Aluminum (SP28/689). The escutcheon plate measures approximately 3 inches wide by 4-25/32 inches high with a 3/32 inch thickness, and the knob has a projection of 2-15/16 inches. This trim is Grade 1 rated, compliant with ANSI/BHMA A156.3 standards. The full manufacturer part number is 210K R SP28.