Sizing Chart
NRS Sizing Chart
NRS Livery Series| | Center to Center* | Flat Area** | Bighorn I | Bighorn II | Compact Outfitter | Stern | Longhorn | Skidguard | Fishing |
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| Otter Livery 96 | 42.5" | 50" | N | N | N | N | 48" | N | N |
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| Otter Livery 106 | 42.5" | 63" | N | N | N | N | 48" | N | N |
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| Otter Livery 120 | 49" | 65" | 48" | N | N | Small | 48" | Y | 48" |
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| Otter Livery 130 | 56" | 72" | 60" | N | N | Small | 60" | Small | 60" |
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| Otter Livery 140 | 64" | 66" | 66" | N | 66" | Large | 66" | Large | 66" |
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NRS Otter Series| | Center to Center* | Flat Area** | Bighorn I | Bighorn II | Compact Outfitter | Stern | Longhorn | Skidguard | Fishing |
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| Otter 120 | 49" | 65" | 48" | N | N | Small | 48" | Y | 48" |
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| Otter 130 | 56" | 72" | 60" | N | N | Small | 60" | Small | 60" |
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| Otter 140 | 64" | 82" | 66" | N | 66" | Large | 66" | Large | 66" |
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| Otter 142 | 58" | 82" | 60" | N | 60" | Small | 60" | Small | 60" |
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| Otter 150 | 64" | 94" | 66" | 66" | 66" | Large | 66" | Large | 66" |
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NRS Expedition Series| | Center to Center* | Flat Area** | Bighorn I | Bighorn II | Compact Outfitter | Stern | Longhorn | Skidguard | Fishing |
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| E-120 | 49" | 65" | 48" | N | N | Small | 48" | Y | Y |
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| E-130 | 56" | 72" | 60" | N | N | Small | 60" | Small | 60" |
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| E-132D | 53.75" | 73" | 54" | N | N | Small | 54" | Small | 54" |
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| E-136 | 57.5" | 73" | 60" | N | N | Small | 60" | Large | 60" |
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| E-140 | 64" | 82" | 66" | N | 66" | Large | 66" | Large | 66" |
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| E-142 | 58" | 82" | 60" | N | 60" | Small | 60" | Small | 60" |
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| E-150 | 64" | 94 | 66" | 66" | 66" | Large | 66" | Large | 66" |
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| E-160 | 69" | 88 | 72" | 72" | 72" | Large | 72" | N | 72" |
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| E-161 | 96" | 96" | 66" | 66" | 66" | Large | 66" | Large | 66" |
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| E-163D | 64" | 88" | 66" | 66" | 66" | Large | 66" | Large | 66" |
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| E-180 | 76" | 100" | N | 82" | 82" | N | N | N | N |
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Aire Series| | Center to Center* | Flat Area** | Bighorn I | Bighorn II | Compact Outfitter | Stern | Longhorn | Skidguard | Fishing |
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| Puma | 47" | 60" | N | N | N | Small | 48" | N | 48" |
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| Super Puma | 49.5" | 66" | 48" | N | N | Small | 48" | N | 48" |
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| Super Duper Puma | 52" | 78" | 54" | N | N | Small | 54" | Small | 54" |
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| 130 D, R | 57" | 72" | 60" | N | N | Small | 60" | Large | 60" |
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| 143 D, E | 60" | 72" | 60" | N | N | Small | 60" | Large | 60" |
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| 156 D, E | 63" | 74" | 66" | N | N | Large | 66" | Large | N |
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Aire Tributary Series| | Center to Center* | Flat Area** | Bighorn I | Bighorn II | Compact Outfitter | Stern | Longhorn | Skidguard | Fishing |
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| 9.5 SF | 48" | 45" | N | N | N | Small | N | N | N |
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| 12.0 SF | 55" | 65" | 54" | N | N | Small | 54" | Small | 54" |
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| 13.0 SB | 60" | 65" | 60" | N | N | Small | 60" | Small | 60" |
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| 14.0 SB | 61" | 70" | 60" | N | 60" | Large | 60" | Large | 60" |
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*Center to Center is the distance from the center of one tube to the center of the other tube.
**Length of frame is limited to the flat area on top of the tubes.
Your frame should be as wide or wider than your boat's center-to-center measurement. Determine this measurement by taking the width of your boat and subtracting the diameter of one main tube: C = W - D (where Center = raft Width minus tube Diameter). If the width of our frame doesn't match your numbers exactly, be sure to order a frame slightly wider than your center-to-center measurement.
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