The OFFICIAL news from Brattonsound (replied to my e-mail today) is that all the EXTRA DEEP, Sentinal Plus rifle safes are:

346mm external depth
55mm door thickness
290mm net usable interior depth

I'll now be ordering an SL7+.

Difficult to imagine, but has anyone on the BBS found a source offering better Brattonsound prices than JSR??

Cheers

Biggles