$69.99 TayMac SE450WH Weatherproof Box Extension, 1-Gang, (4) 1/2-Inch Outlets, White: Amazon.com 
ReceptXtenders 1-Gang 3/4 in. Electrical Receptacle Box Extension Ring-00006 - The Home Depot
Smart Fill Spacers 1-Gang Outlet Box Spacer Extender Combo Pack (5-Pack)-SGCMB-5 - The Home Depot
