Window Aperture Decoupage Card Blank Pack by Craft UK Window Aperture Decoupage Card Blank Pack contains 24 white window cards & 24 white custom made envelopes. Special designed for use with the window decoupage sheets
- which will fit the aperture card perfectly to make a stunning, creative 3D card. Window Aperture Decoupage Card Blank Pack by Craft UK is the perfect pack of card blanks for all handmade greeting card enthusiasts.