Center Step Card Template Size Envelope

[LUhrig]

Greetings! Does anyone know what size envelope I should use for the Center Step Card Template???
Where can I find it to buy it?
Thanks,
~Elizabeth

[Cook22]

If you're talking about the size of card based on the measurements given in the tutorial in Resources here, the finished size is 5 1/2" square. If you can get 5 3/4" envelopes they would work fine, but I can't suggest where to buy them.
If you don't make a lot of square cards (and I know they cost extra in postage for you - always so glad they don't for me!) you could always make your own from sheets of unwanted 12 x 12 paper. There's a good tutorial in Resources for that, if you use Envelope in the search box.