Threaded Aluminum Couplings
Standard
Thread
| Duct Size | Part # | Description |
| 1" | 1.231 | 1" True ID duct coupling |
| 1" | 1.315 | 1" SDR duct coupling |
| 1" | 1.325 | 1" SIDR Duct coupling |
| 1.460 | ||
| 1 1/4" | 1.580 | 1 1/4" duct coupling |
| 1 1/4" | 1.660-w/hole | 1 1/4" SDR duct coupling |
| 1 1/4" | 1.660-no/hole | 1 1/4" SDR duct coupling |
| 1 1/4" | 1.488 | 1 1/4" True duct coupling |
| 1 1/2" | 1.900 | 1 1/2" SDR duct coupling |
| 1 1/2" | 1.880 | 1 1/2" duct coupling |
| 2" | 2.375 | 2" duct coupling |
| 3" | 3.500 | 3" duct coupling |
| 4" | 4.500 | 4" duct coupling |
Aluminum
Coupling (Universal) Corrugated, smooth wall, and ribbed duct
| Duct O.D. range | Part # | Description |
| 1.231-1.400 | *100U | 1" Corr, smth, ribbed duct |
| 1.490-1.710 | *125U | 1 1/4" Corr, smth, ribbed duct |
| 2.310-2.450 | *200U | 2" Corr, smth, ribbed duct |
Plastic couplings (non-metallic)
Jayco 13mm/micro duct couplings
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