Lightbulb socket adapters are available for purchase at The Home Depot, Lowe's and Ace Hardware. Each store offers purchases via telephone and through their respective websites, HomeDepot.com, Lowes.com and AceHardware.com.
HomeDepot.com features socket adapters from manufacturers such as Westinghouse and Leviton. These adapters include medium base, twin-socket, two-outlet sockets and outlet-to-socket types and candlestick and bottle adapter kits.
Lowes.com sells socket adapters in white, black and ivory. The adapters include medium base, two-outlet sockets and pull chain. Lowes.com offers brands that include Utilitech, Halo and Project Source.
Brands sold through AceHardware.com include Leviton, Cooper Wiring, Jandorf and Allied Moulding. The company offers medium base, two-outlet sockets and pull chain socket adapters.