If he was crate trained and sleeps in a crate every night, then you shouldn't have any issues as a dog box is really no different than a crate.
_________________
CoonDawgs.com - A Site Designed for Coon Hunters
American Houndsmen - Vintage Hound Hunting
Coon Dog Cemetery - Key Underwood Coon Dog Memorial Graveyard
HuntingBassets.com - A site dedicated to hunting with Basset Hounds