Residential HVAC Installation Practice Exam 2026 - Free HVAC Practice Questions and Study Guide

Tabs and adhesives are a common method used to fasten acoustical lining to the inside of sheet metal ducts because they provide a secure and durable bond between the lining and the ductwork. Tabs help hold the lining in place while the adhesive ensures a strong attachment. This method is preferred over other options like magnetic clips, welding, or zip ties as they may not provide the same level of secure and long-lasting attachment for acoustical linings in sheet metal ductwork.