Thanks a lot, folks!
Vida, I don't know... I just tried to measure the table with the ruler to size out that box and it seems to be too narrow and low. May be you are right, it's bigger "in person". :) But just from measurements doesn't look huge.
Upnover, I certainly will check it out!!
Dumas'_Grrrl, I don't want to bolt it in (I use truck for hay delivery and all), but I plan on putting chain with the lock on. :) I know, not all people are nice, unfortunately. We have emails with disappearing tack all the time in area...