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Field glossary

Upblast fan

A roof exhaust fan that discharges vertically up and away from the roof, used for dirty or greasy air

Used across 2 Anvilfield field guides, most in HVAC.

Also defined as

  • The rooftop grease exhaust fan that discharges up and away from the roof, hinged for cleaning

Where this shows up

HVACKitchen grease duct field guideHVACCommercial exhaust ventilation guide

Related terms

AHJBackdraft damperClearance to combustiblesMakeup airType I hoodType II hood

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