While Carlson pet gate parts are designed to be put together in a matter of minutes, the assembly can depend on the type of gate you choose. Many of their gates don’t require assembly—simply install them in your doorway, and they’re ready to go. Other models—like some steel and flexi gates—may need a little more work and a few tools to put together. Depending on the model, extension panels will likely require some assembly but should be reasonably easy to fit together. Follow the instructions that come with your Carlson Pet Products purchase.