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| System | Max Stay Length |
Maximum Wire Size |
Maximum Pin Size |
Luff Dimensions |
Drum Diameter |
| FF1 | 21' | 1/8" | 1/4" | 0.5x1.3" | 3.5" |
| FF2 | 29' | 3/16" | 5/16" | 0.6x1.4" | 4.0" |
| FF4 | 33' | 7/32" | 3/8" | 0.9x1.8" | 5.8" |
| FF6 | 39' | 7/32" | 3/8" | 0.9x1.8" | 5.8" |
| FF7.0 | 47' | 1/4" | 1/2" | 0.9x1.8" | 6.5" |
| FF9.0 | 53' | 5/16" | 5/8" | 1.2x2.2" | 6.5" |