Interpretation #9597

Published October 23, 2026

Original Request

Code Version: 2023
Code: RESIDENT
Code Description
Chapter: 16
Section: M1601.4
Topic: Duct to air handler connection

Question

Is it the intent of Section M1601.4 to require a metal connection along with screws when connecting duct board to an air handler, as shown in SMACNA Figure 4-10 and NAIMA Figure 3-30B, or would a metal listed tape satisfy this requirement?

Attachments

AH116.pdf Download

Answer Published 10/02/2026 at 11:19 AM

Yes, the cited section requires compliance with the stated documents

Commentary

None.