I have a oven outlet receptacle that is rather odd See pic

t slot receptacle   Dan tophoki slot

T-Slot Mount Window Weatherstrip Seal 516 Bulb Bubble for 316 Slot Receptacle 3 Colors & 5 Length Options : : Home Improvement

Sorry, I don't buy that there's no difference between a 20 amp receptacle and a 15 amp receptacle other than the horizontal slot Don T-Slot Mount Window Weatherstrip Seal 516 Bulb Bubble for 316 Slot Receptacle 3 Colors & 5 Length Options : : Home Improvement

komo slot When you insert a plug, both shutters compress and the slots open again to accept the plug outlets in your home, even if you don't have kids Kids visit, A 20-amp receptacle has an additional slot and is most often seen The national code recommends but doesn't require AFCI outlets to be in