Yup, 3 Razr Maxx's here with Otterbox Commuter cases. All fit tight/well.
Before you go to install, turn the phone off. Now, take phone and place the soft silicone cover on. After this carefully/slowly insert the phone with it's silicone cover into the hard case being sure to insert the side with the volume control into the hard case first aligning the volume control button so it slips into the hard cases slot of it. After the volume button is in alignment, then push the other side of the phone into the hard case. After you do this install a couple of times you will get the knack of it.
Great case by the way!