A two gang electrical box that greatly reduces the time and effort required to mount one or two electrical components to a wall or similar surface. Wall preparation requires only the use of a standard hole saw thereby greatly minimizing installation time. The two gang electrical box includes a plate with an opening therein and a substantially circular sidewall extending from the plate at the periphery of the opening and terminating in a rear wall. Mounting fasteners extending through the plate include clamp arms thereon for securing the electrical box to a wall. The clamp arms can be rotated to either an inward position or an outward position. The sidewall is provided with open areas or recesses to fully accommodate the clamp arms when rotated to the inward position thereby enabling the peripheral wall and clamp arms to pass easily within the wall opening created by the standard size hole-saw.