That thing had most likely been opened before. As you can see that after the brown/black coloured frame is removed, there is a screw-hole with a missing screw along the bottom edge. The other thing to beware of -- for somebody that hasn't removed all those screws before is ---- as can be seen from the video, the white-coloured front panel (which actually contains the glass) can actually (and unexpectedly) fall away from the door. This means that if you don't hold onto the white-coloured front section when removing the screws, then it come come crashing down onto the floor, and end in tears ---- such as broken or cracked glass etc. So - after undoing the screws, make sure to know that the white coloured panel can actually fall away onto the floor (and crash - possibly even breaking/cracking glass), and catch somebody by surprise. So - remember - the METAL frame (with the metal grill) on the inner side of the door is not the part that comes off. It's actually the white-coloured frame that is the removable piece.