My dogs are grown and don’t spend much time in crates anymore. I do have a 42” crate in my dining room, a 36” one in my bedroom, and two 36” ones in my mud room. I have 36” crates in the minivan. I tried 42” crates in the minivan, and my dogs freaked out. They like a snugger fit in the van.
All my puppies have gone to work with me until they were at least a year old. The crate at work is Great Dane sized. At home, puppies stay in a 42” crate.