Always verify drum model against the door manufacturer's parts list. Cable wraps are approximate and assume standard 4" diameter drums. Drum part numbers vary by manufacturer.
Standard Lift Drums
7' Door
4" (400-8)
6.7 wraps
Cable: 8' 6"
8' Door
4" (400-8)
7.6 wraps
Cable: 9' 6"
9' Door
4" (400-9)
8.6 wraps
Cable: 10' 6"
10' Door
4" (400-10)
9.5 wraps
Cable: 11' 6"
12' Door
4" (400-12)
11.5 wraps
Cable: 13' 6"
14' Door
4" (400-14)
13.4 wraps
Cable: 15' 6"
16' Door
4" (400-16)
15.3 wraps
Cable: 17' 6"