The 20" Grapple Bar enables you to create 90-degree connections between similar trusses at any point along a perpendicular primary truss. With a load capacity that can carry up to 75 percent of the manufacturer's load rating, this grapple bar offers reliable support for your inline trusses. However, it's important to note that point load calculations should be considered for the primary truss and that the secondary trusses must be supported at both ends.