I would like to thank everyone for your input.
I have pretty much decided on 40" L x 18" W x 10" H inside dimensions.
Now I just need to figure out what size flexwatt to use inside on the floor.
(there will be a glass sub floor raised 1/4" off the plywood floor (thank you, Jenn for this idea)).
Any additional comments would be greatly appreciated.
thank you
Bill![]()