Pass & Seymour S1-18-W 3-3/4 x 2-1/4 x 3-1/32 Inch 18 In? 1-Gang Thermoplastic Switch and Outlet Box If you need to add a junction box to house jacks, volume controls, switches or receptacles, this single gang unit makes it easy. Just cut a rectangular hole in the drywall, pop this box in and tighten 2 screws. A clamp flips out behind the drywall as you tighten the screws to clamp the box into position.
