1.Choose vent options

Vent Exhaust Option

The hood is designed for vertical or horizontal discharge or can be installed in a recirculating ductless version:

Vertical discharge:

Use a rectangular duct 3 1/4” x 10”.....

....or use a round 7” duct

Horizontal discharge:

Use a rectangular duct 3 1/4” x 10”

Recirculating (non vented ductless)

Examples of possible ducting

Recirculating

Vertical discharge

Horizontal discharge

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Bosch Power Tools DUH installation manual Choose vent options Vent Exhaust Option, Vertical discharge, Horizontal discharge