A2 Tri-Shutter Cards

 This Tri-Shutter card is A2 in size, approximately 4" x 5-1/2", and comes with the card base with score lines and the mats and paper embellishments shown. 

https://jamielanedesigns.blogspot.com/2022/04/a2-tri-shutter-cards.html

If you need a tutorial for the folding of the cards, you can find that HERE.