Question about Peco Set Track

[Allegheny2-6-6-6]

I have 18 code 100 or 00 as they like to call it across the pond PECO Set Track Double curved turnouts let over from my old layout which never got put down. I will be honest when it comes to PECO and their Insulfrog & Electrofrog turnouts I am totally confused, You know the separated by a common language thing.

Even when you go to PECO’s website it doesn't specify weather their IF or EF. Is there a way of telling just by looking at them? I intend to use them in a hidden staging yard located in the adjoining room, my wife thinks we were cleaning out the basement this weekend for her, silly woman.

 

Thanks