221 File Extension - What is it and how to open 221 format
221 

Opening 221 files

Have a problem opening a .221 file? We collect information about file formats and can explain what 221 files are. Additionally we recommend software suitable for opening or converting such files.

What is the .221 file type?

221 — Pro/ENGINEER Versioned File.

Software to open or convert 221 files

You can open 221 files with the following programs: 

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