Global Truss 185-IB164 12 inch Aluminum Flat / I Beam Truss. 1.64 foot long straight piece. 4 LbsTruss overall width is 11 7/16 inches. 2 inch OD pipes. Truss pipes are 9 7/16 inches center to center width. **Includes 2 couplers, 2 pins and 2 clips to connect to another section of truss**A note about LOAD RATINGS: Our load ratings are conservative. Keep in mind that the load ratings given are for a specific distance between supports and in our industry it is rare to go these longest distances without a support via stand or ceiling cable. Load ratings...For a 13ft span: 129 Lbs per foot, 1693 Lbs total. For a 19.7ft span: 85 Lbs per foot, 1679 Lbs total. For a 26ft span: 47 Lbs per foot, 1252 Lbs total. For a 32ft span: 30 Lbs per foot, 992 Lbs total.