If you're unsure of the best choice for your project, contact the Unistrut Service Company and ask for assistance. It's a good idea to consult an engineering expert before selecting any strut.
If you're not sure what size you need, check the Unistrut Engineering Catalog. It contains information on the types of steel and aluminum channels and their various profiles and finishes. There are also load tables for each profile to help you select the right one. If you're unsure about the size of a particular channel, check with your Unistrut Service Company to ensure that you're getting the right one for your project.
Among the other factors to consider when choosing a Unistrut channel, the material you'll use, and the hole pattern are all important. You'll also want to consider the weight of the structure, which can impact the size of your struts. The more you weigh these variables, the more you'll have a clearer picture of the right size for your needs. The Unistrut Engineering Catalog is a great resource when you need to know the various Unistrut channel series, and the load tables available for each series.
Besides the single lengths, Unistrut channel can be welded together to form different channel combinations. The most common back-to-back channel is the Unistrut P1001 (which is two pieces of the P1000 welded together). Side-to-side and back-to-back welding are the other common configurations. If you need a larger size, you can also buy a 4-channel combination.