Lbc1.7z -

If the file is password-protected, you must enter the password provided by the original source to open it.

You cannot open a .7z file directly like a normal folder. You need an extraction tool. LBC1.7z

Use The Unarchiver , a free tool from the Mac App Store that handles .7z files easily. If the file is password-protected, you must enter

This is the specific label given to this archive (e.g., perhaps "Library Collection 1" or "Location Batch 1"). If the file is password-protected

This indicates a 7-Zip compressed archive file. It uses high-compression ratios to make large files smaller for easier transfer.