Sigma Engineered Solutions 8-Pack 0.5-in and 0.75-in Plastic Electrical Box Knockout Plug in the Electrical Box Knockout Plugs department at Lowes.com
Junction Boxes - Electrical Boxes - See Water Inc.
TRIPLE 3 GANG 13AMP SWITCHED FUSED MAINS WALL PLUG SOCKET C/W SURFACE MOUNT BOX | eBay
LESCO DOUBLE SURFACE MOUNT BOX OUTLET | BRIGHTS Hardware
Amazon.com: 6 AC Outlet 8ft Extra Long Power Cord Power Electrical Wall Flat Type Plug Socket Surge Protector Strip Switch Adapter : Cell Phones & Accessories
Bulk Buy China Wholesale Power Socket, Ce Approval 4-way Electric Plug Socket Box, 4 Gang Extension Socket, Plug Receptacle $2.6 from Linhai Yufly Commercial Co. Ltd | Globalsources.com
Legrand 2-Gang Plastic New Work/Old Work Rectangular Electrical Box in the Electrical Boxes department at Lowes.com
Recessed Electrical Box for Deep Outlets & Cables 2-Gang