Here are some things to consider when shopping for and buying a doggie gate. Consider gates that are approved for babies as they often have the best safety features.
It should be wide enough to expand across the area you are trying to cross. You may want to measure your door first! Most doorways vary from 28 to 36 inches in width. If you need more width, choose a model that allows for extensions. Some can extend up to 3 feet for larger entrances or doors
Choose a height that your pup will not be able to jump over now or in the immediate future as he grows and secure enough that he can't easily knock over.
The temporary gate, gives you more flexibility to move it to different locations such as at the bottom or top of stairs or to different rooms. Permanent gates are generally sturdier but need to attach to the wall or doorframe.
It is best to keep a puppy confined to smaller areas until you can trust him to roam the house. Baby gates can help block off rooms, stairways, carpeted areas or forbidden rooms while your puppy is being house broken.
Consider where you are placing the gate relative to where you normally walk in your home when selecting the style. If placing a gate in a high traffic doorway, consider a style that easily opens and closes allowing human traffic flow or allows you to easily remove and replace it.