4 Gang Electrical Box Extender Goof Ring Depth Adjuster
FiberglassBox 4-Gang New Work Electrical Box - Amazon.com
Newhouse Hardware 1-Gang PVC Old Work Electrical Outlet Box (1-Pack) | 14 cu. in. Plastic Junction Box for Switches, GFCI, or Duplex Receptacle Outlet | Electrical Box for Home Improvement - Amazon.com