Specification History
| SWS Version | Created | Specification ID | Title | Specification | Objective | Rationale | Status |
|---|---|---|---|---|---|---|---|
| Version 2025 | 05/15/2025 - 12:29 | 6.0202.1a | Duct selection | Select dryer transition duct that is no more than 8 feet in total length, and contains no joints Flexible transition ducts shall be UL 2158A Rigid transition ducts shall be metal with smooth interior Transition ducts shall not extend beyond the room in which the appliance is located Select primary ducts that are rigid, 30-gauge minimum in thickness, non-corrosive, with a smooth interior. |
Smooth airflow that does not collect lint |
The committee agreed that the original language required additional clarity regarding material selection. The new revised language specifies materials and standards for both transition and primary dryer ducts. This was done to eliminate confusion between duct types. | Red Line |
| Version 2025 | 04/28/2025 - 16:48 | 6.0202.1a | Duct selection | The transition ducts (flexible or rigid) used to connect the dryer to the primary exhaust duct system shall be UL 2158A approved and less than 8 feet in total length with no joints. Select primary dryer ducting material that is 28 gauge metal with a smooth interior |
Smooth airflow that does not collect lint |
The committee determined the reference to 28 gauge shall remain because the IRC requires 28 gauge or thicker for all dryer vents (M1502.4.1). The committee determined a need to clarify that transition ducts connect the dryer to the primary exhaust duct. | Red Line |
| Version 2025 | 09/25/2023 - 11:24 | 6.0202.1a | Duct selection | The transition ducts (flexible or rigid) used to connect the dryer to the primary exhaust duct system shall be UL 2158A approved and less than 8 feet in total length with no joints. Select primary dryer ducting material that is 28 gauge metal with a smooth interior |
Smooth airflow that does not collect lint |
The committee determined the reference to 28 gauge shall remain because the IRC requires 28 gauge or thicker for all dryer vents (M1502.4.1). The committee determined a need to clarify that transition ducts connect the dryer to the primary exhaust duct. | Red Line |
| Version 2020 | 08/14/2020 - 14:27 | 6.0202.1a | Duct selection | Select dryer transition ducting materials that are UL 2158A approved and less than 8 feet in total length with no joints Select primary dryer ducting material that is 28 gauge metal with a smooth interior |
Smooth airflow that does not collect lint |
Black Line | |
| Version 2020 | 08/14/2020 - 14:27 | 6.0202.1a | Duct selection | Select dryer transition ducting materials that are UL 2158A approved and less than 8 feet in total length with no joints Select primary dryer ducting material that is 28 gauge metal with a smooth interior |
Smooth airflow that does not collect lint |
Black Line | |
| Version 2020 | 08/14/2020 - 14:27 | 6.0202.1a | Duct selection | Select dryer transition ducting materials that are UL 2158A approved and less than 8 feet in total length with no joints Select primary dryer ducting material that is 28 gauge metal with a smooth interior |
Smooth airflow that does not collect lint |
Black Line |