Junction Box...any 4"x 4"x 2-1/8" Box will do. Sometimes a 4-11/16" Square by 2-1/8" Deep is used.
Pardon my unorthodox terminology.
Couldn't get the boxes you describe here. Didn't know they existed other than ads in ECM (Electrical Contractor Magazine). Doesn't seem like they'd hold too many conductors legally...
[This message has been edited by sparky66wv (edited 05-04-2001).]
-Virgil Residential/Commercial Inspector 5 Star Inspections Member IAEI