Access panels shall be the same _______ and _______ as the duct.

Access panels shall be the same _______ and _______ as the duct.

• A. Size and Material
• B. Thickness and Size
• C. Material and Thickness
• D. Size and Weight

Answer: (C)

Access panels are used to provide service access to ductwork while keeping the duct’s performance consistent. Making the panel from the same material and with the same thickness as the duct preserves the duct’s structural integrity, airtightness, and fire-resistance characteristics. If the panel uses a different material or a different thickness, it can create weak spots that may leak air, deform under pressure, or fail to meet fire ratings. Matching both material and thickness ensures the panel behaves like the duct itself, maintaining overall performance. Size or weight alone doesn’t guarantee compatibility, so material and thickness together are what matter.

Access panels are used to provide service access to ductwork while keeping the duct’s performance consistent. Making the panel from the same material and with the same thickness as the duct preserves the duct’s structural integrity, airtightness, and fire-resistance characteristics. If the panel uses a different material or a different thickness, it can create weak spots that may leak air, deform under pressure, or fail to meet fire ratings. Matching both material and thickness ensures the panel behaves like the duct itself, maintaining overall performance. Size or weight alone doesn’t guarantee compatibility, so material and thickness together are what matter.