| Image | Supplier | Item Code | Short Description |
|---|---|---|---|
| | Spears | SPE 4351S-180 | 18 PVC SOLID FLG SOC DUCT SMACNA |
| | Spears | SPE 4351S-180C | 18 CVC SOLID FLG SOC DUCT SMACNA |
| | Spears | SPE 4353S-180 | 18 PVC BLIND FLANGE DUCT SMACNA |
| | Spears | SPE 4353S-180C | 18 CPVC BLIND FLANGE DUCT SMACNA |
