Hospital Grade recept's have nylon faceplates for durability. They have increased plug pullout specs per UL standards - they grip like a heart attack.
Spec Grade, Commercial Grade are ad words with no standards to compare them. However, they are *all* much better than the trash "contractor" or "builder", sub $1.00, items sold unboxed at the home center. They have screw connectors instead of the trash stab-in connections. I've replaced all my switches and receptacles w/ Leviton Spec grade (FIM's on the A/V outlets). The remaining 50% of the equation is to torque the connections per mfgr. specification -- NEC and UL required. It's impossible to guess at this. And to clean the receptacle terminals prior, since they're dirty right out of the box.
Spec Grade, Commercial Grade are ad words with no standards to compare them. However, they are *all* much better than the trash "contractor" or "builder", sub $1.00, items sold unboxed at the home center. They have screw connectors instead of the trash stab-in connections. I've replaced all my switches and receptacles w/ Leviton Spec grade (FIM's on the A/V outlets). The remaining 50% of the equation is to torque the connections per mfgr. specification -- NEC and UL required. It's impossible to guess at this. And to clean the receptacle terminals prior, since they're dirty right out of the box.