Duplex / Three Toggle (3-D3T) - This is a combination switch plate that contains space for one Duplex Outlet and three Toggle switches. Toggle switches are the most common type and are found in most homes. A Duplex is a pair of electrical outlets. Some of these switch plates can be turned over (so the Toggle is on either the left or the right) without affecting the design. Be sure to look at the design on the product page to make sure. All of these styles have a Duplex / Three Toggle switch plate available even if it is not shown in the picture below.