,Thickness##length##inches,R_Value##other##,Pass Door##other##,Breakaway Bottom Section##other##,Model##other##,Description##other## 525S,2,6.83,0,0,525S,Clopay Overhead Sectional Door - Model 525S 524S,2,6.83,1,1,524,Clopay Overhead Sectional Door - Model 524 520S,2,6.83,1,1,520,Clopay Overhead Sectional Door - Model 520