Joe that looks sweet!!! However 140 ft is a run and a half when your freezing!!! If there is snow or ice on the ground it will be even worse. I am not sure the door is a good idea. Being your getting closer to the big "R" you will have tons of time on your hands, I think you should build an above ground tunnel (heated of course). This way the better half will not freeze or slip on the snow or ice, and what about the little ones, After they go in their fur will definitely freeze. lol
All kidding aside the tub looks fantastic, like everything you do!!! All the Luck with it!!!!!
And to you, because of Dennis you get the max 5 bananas!!!!! lol