Comes in pairs, one for each side of the rack. NOTES ABOUT SLIMPRO VAN RACK SIDE PROFILES! Side profiles for a rack length of 1156mm up to 1762mm do not get joined. All rack lengths longer than 1762mm use joined side profiles. Any combination of Slimpro van rack side profiles can be used together. (Take note of Factory roof mount points. These points need to be 110mm away from a side profile joint). If you have any questions, please contact us before purchasing.