The Jonard Tools WTL-12 wall box template and level is designed specifically for cutting out single and double gang old work boxes. The wall template leveler is perfect for ensuring the boxes are level every time. This wall template level features the following: built-in levels assist in positioning the template perfectly, wide protective rubber strips hold the template in place and prevent scratching the wall, works with Carlon B114R B12R single gang boxes, Carlon B225R double gang boxes, Carlon SC100RR low voltage plates, Arlington Industries LVL1 and LVL2 boxes, and many other brands of single and double gang boxes, and screw holes added to hold it in place for hands-free use. Single gang cutout dimensions: 2 1/4 x 3 5/8, double gang cutout dimensions: 4 x 3 5/8. VERSATILE USE: Designed for both single and double gang old work boxes for horizontal and vertical mounting PRECISE LEVEL: Built-in levels assist in positioning the template perfectly and ensuring the boxes are level every time SAFE OPERATION: Wide protective rubber strips hold the template in place and prevent scratching the wall CONVENIENT FUNCTION: Screw holes added to hold it in place for hands-free use UNIVERSAL COMPATIBILITY: Works with Carlon B114R B12R single gang boxes, Carlon B225R double gang boxes, Carlon SC100RR low voltage plates, Arlington Industries LVL1 and LVL2 boxes, and many other brands of single and double gang boxes