The page protectors that are compatible with this album are:
Pioneer 12 x 12
The video failed to mention that you can also use the multi-configured WeRMemoryKeepers page protectors as well. These albums are HUGE. I can scrap around 1000-1500 photos in one album using the WRMK protectors...I use them for my yearly family albums. I use a combination of traditional 12 x 12 layouts/protectors and slide in 4 x 6, 4 x 6, 6 x 6 combinations of page protectors.
Great album, sturdy, well made. I was really impressed with the amounts of layouts I was able to fit.