SheetMorph

Dampers, doors and attenuators

Parts that go into a run of duct: dampers to set the flow, doors to reach inside it and attenuators to quieten it. Each of these opens in the browser with default sizes that already give a verified flat pattern: change them to yours, check the drawing, add seam and flange allowances, and export.

Volume Damper

A round sleeve with one blade, or a rectangular sleeve with a row of blades: the blades cut with their clearance and the sleeve with its shaft holes.

• Round
• Rectangular

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.

• Single skin
• Double skin

Sound Attenuator

The casing of a sound attenuator: rectangular with a row of splitters, or round with a pod on its axis.

• Rectangular, with splitters
• Round, with a pod