Receptacles - found at - Utility Supply Group
R32U - Midwest 30 Amp Receptacle without Plate
BR32U - Midwest 30 Amp Receptacle with Plate
BR54U - Midwest 50 Amp Receptacle with Plate
1263 - COOPER 30 Amp Receptacle with Bracket
U1263 - COOPER 30 Amp Receptacle without Bracket
1258 - COOPER 50 Amp Receptacle with Bracket