Kastaka

Hello everyone! I want to buy a nice case for my father for him to store his 45 lps. I searched on internet but most fail to say what the exact measures of the case's interiors are. My father covers every lp with a plastic sleeve of 8.5cmX8.5cm. Do you know any good case that could fit my needs? If so please let me know the name and eventually any reccomendiations yoi have. Thanks a lot in advance!