The page protectors that are compatible with this album are:
SEI 8 x 8
I bought 4 of these 8x8 albums to make a scrapbook for each one of my nieces and my nephew. They are the perfect size! I thought a 6x6 would be too small and the 12x12 size would be too big, but the 8x8 was perfect for me to still have enough room for embellishments pictures.
I was totally surprised at the quality and appearance of this scrapbook - especially for the price. I needed something simple for a mini-project - these books are just perfect.