I don't think any electronics can claim to be 'lightning proof', probably the best you can hope to do is to try and protect it from strikes that are fairly close - by protecting the phone and mains inputs.
I'm also impressed by your availablility of a 2.56 Megawatt electricity supply!, I wouldn't like to have your bills :lol:
But 1600V isn't much of a lightning test, you probably need to put three more zero's on the end!.
I see quite a lot of lightning damaged equipment come in for insurance estimates, any close strike (or an actual strike on the house) causes immense damage - components blown completely to pieces, tracks vapourised off the PCB.
What exactly are you wanting to protect, from what type of strike, and from what method of entering the board?.