Yes its very easy to consolidate multiple Outlook PST files in one single file. You can do this using Combine Outlook PST.

So download Combine Outlook PST Tool when want to combine more than one PST files in one single file. Combine PST Software helps when want to manage more than one PST files through one single PST file after doing a small combine process. You can use this application in all Windows based Operating system and can combine all Outlook version PST files.
visit here :- mergeoutlookpst.com/