Sonneman Lighting Wave Shade 3 light Chrome Sconce (Polished Chrome, Off-White). The Wave Shade 3 light Sconce has a backplate dimension of 24.25 inches wide x 5.5 inches deep and has a shade dimension of 24.25 inches high x 6.75 inches wide x 3.25 inches thick. Number of Light: 3 Lights Sconce Type: Electric