Access Door

A door over an opening in the side of a duct: the side with its opening, and the door folded as a pan, single skin or with an inner skin. A door over an opening in the side of a duct: the side with the opening cut in it, and the door folded as a pan from one blank, single skin or with an inner skin.

• Single skin
• Double skin

How the access door is developed, with a worked example · Dampers, doors and attenuators