Decora style High-quality auto transformer series provides excellent frequency response, low insertion loss, and reliable performance for volume control applications in 25 and 70.7-volt systems. Attenuation is accomplished in ten make-before-break steps plus positive off position. (No stop between maximum and off position to prevent switch damage). Contacts are silver-plated for noise-free operation. It features a removable terminal block and comes complete with white and ivory plastic plates with matching skirted knobs. Atlas Sound AT100D Deluxe Decora Plate Mounted 100W Attenuator, 3dB features: Attractive Alternative to Commercial Series Attenuators Mount into Most 1-Gang E.O. Boxes White and Ivory Plastic Plates with Matching Skirted Knobs in Decora Style Specifications: Plate Color: White - Ivory Plate Size: 1 gang Plate Type: Decora Power Rating: 100W Total Attenuation: 27 dB Height: 4 1/2" (11.43 cm) Width: 2 3/4" (6.985 cm) Depth: 2 1/2" (6.35 cm) Shipping Weight: 1.50 lbs (0.68 kgs)