Unbreakable wall files hold letter-size or A4-size file folders and documents. Mount on walls with included mounting hardware or hang on partition hangers (also included). Use hanger set to hang the wall file. Hangers can be adjusted to fit partitions from 1-1/4" to 3-1/2" thick. Wall file is made from unbreakable plastic.Unbreakable wall files hold letter-size or A4-size file folders and documents. Mount on walls with included mounting hardware or hang on partition hangers (also included). Use hanger set to hang the wall file. Hangers can be adjusted to fit partitions from 1-1/4" to 3-1/2" thick. Wall file is made from unbreakable plastic.