Vertical Track 11 ft 4 in Includes Lock Cut -Out and Holes for Standard Angle/Bracket Attachments For Use With Mfr Model Number Fits 3 in Rollers Garage Doors 12 ft High Type Heavy Duty 12 Gauge 304L Stainless Steel For Use With Fits 3 in Rollers Garage Doors 12 ft High 1 Pair