Alpha Holders Size and Fit
We've seen lots of different slabs for a wide variety of collectibles out in the world, including standard size cards, tallboys, tickets, photos, autographs, and unopened packs. We made an early decisions to focus on the PSA standard size slab so we could reach the widest audience of collectors with our first product release.
Alpha Holder overall size: 6-5/8" long x 4" wide x 11/16" tall
Yes, it fits: PSA Standard Size Center Joint Slab
Yes, it fits: PSA Standard Size Nested Slab