This 10-pack of 14 x 11" Refill Sheet Protectors from Start by Prat is compatible with the landscape Spiral SPBL-14BK and the Post Bound PBPRL-14 books, and the pages are also compatible with other landscape multi-ring binders.
The pages are made from a polypropylene plastic, which are optically clear for viewing your images, and the archival and acid-free pages are top-loading with three sides completely sealed.