Holder for fire extinguisher, 67mm ID

I used silicon at the back to support those two small screws to hold it firm. Actually, you should never hide your extinguisher, but as a compromise you can make sure you know where it's is. Every time you open the door you get the sensation that something is falling out and remind you about where to find it. Another benefit is that it's stay front most and won't move inwards the cabinet.