The unit is simple to set up and portable for your convenience

Average life span of the Beagle = 12-15 years
Dog crates combined with dogs not getting enough exercise will result in behavior problems. Dog crates work best when your dog is getting the exercise he needs. If you’re going to use a dog crate, make sure he’s getting that exercise.
Both you and he will be happier for it.

Keeping Beagles and other smart breeds safe when you are away from home with a heavy duty dog crate for their own safety and your peace of mind solution is.

36" Intermediate Drop Pin Dog Crate for Dogs 41 - 70 lbs
American Eskimo, American Pit Bull Terrier, American Staffordshire Terrier, Australian Cattle Dog, Basset Hound, Beagle, Brittany Spaniel, Bull Terrier, Bulldog, Chinese Shar-Pei, Cocker Spaniel, English Setter, English Springer Spaniel, Finnish Spitz, Harrier, Keeshond, Kerry Blue Terrier, Norwegian Elkhound, Portuguese Water Dog, Soft-Coated Wheaten Terrier, Welsh Corgi, Whippet

Crate Size - Beagle Forum : Our Beagle World Forums

How to Crate Train Your Beagle - Learn how to easily crate train your beagle and have fun in the process of providing a safe place for your dog. Initially place Beagle dogs, in their crate, somewhere that receives heavy traffic. Teach people in your household that if they walk past the puppy or dog to ignore it if it is whinging or praise it if it is being quiet, and showing no stress. Having people walk past the dog in the beginning of crate training asserts to the dog it is not alone, and only receives attention when it is good. Remember, if you make a fuss and take the hunting dog out of its crate or give it attention when it is upset, you are rewarding the dog for its bad behaviour. Only reward the dog for good behaviour. In crate training start by leaving Beagle dogs in their crate until they have been quiet for 5minutes. The next time stretch it out to 10minutes, then stretch it out to 20minutes etc. Eventually, you will be able to leave your hunting dog in its crate all day, if that is how long you will be away for.

Looking online it says beagles should be in a 36" crate..

Crate training Beagle dogs is important for their good behaviour at home and on a hunt. It makes your life easier knowing you can leave your dog alone where it is safe, and comfortable. Hunting dogs are transported all over the place, so familiarising with a crate at home helps enormously when you need to place them in a crate to take them hunting.

Can you tell Mixer is my first dog and I have no idea what I'm doing?

You may be unsure if your beagle will like their crate. It’s important for you to know that most beagles end up loving their crate! For hundreds of years wild dogs have slept outdoors in small, warm spaces to keep themselves safe. So it is in a beagle’s nature to crave an environment, such as a crate, where they can feel safe. If you don’t allocate a specific safe area, like a crate, to your beagle, they may get anxious and will try to control a bigger area such as your living area.The Beagle needs a moderate daily walk or a closed off area for him to run around and play. Consider your dogs daily exercise requirements when figuring out your crate training schedule.
Beagle exercise requirements = 3 out of 5
(5 being the breed of dog that requires the highest level of exercise)