This strut is available in three different strengths. 400N, 450N, 500N. All three options are the same size for fitting to any Mt Hood tent. But the stronger ones will support more weight on the top racks. The three strengths align with the 3 sizes of the Mt Hood tent, Small, Medium, and Large. But again, if you wanted to, you could put the Large Struts on a Small tent for added opening power.