Just over 4"
You can twist the black button to lossen it in order to remove the cover. You can raise up the cover and loosen the hook so that you can attach your water hose and then replace your cover after you complete watering.
I’ve searched for an answer to this and no luck. I have used them on two houses in temperatures that got down to the teens with success. I also wrapped my pipes that came into the house for extra protection. You can insulate the inside of the box if you are concerned about the bib freezing.
Cord is hard but it does stretch. I have 3 outdoor faucets. Kinda difficult but it does go around and snuggles tight.
Al, i highly doubt it will, but i found towels and duct tape work great when faucet covers don’t
Yes it lasts for repeated seasons. Just check for wear.