A projecting cover above a hearth, forming the upper part of the fireplace, and confining the smoke to the flue.

Canopy of stone or timber and plaster over the fireplace to collect and conduct smoke to its flue. (Wood, Margaret. The English Medieval House, 412)

The component of a system that captures heated air/gases, smoke and particulate; located at pickup point (see CANOPY).

metal covering leading to a vent that exhausts smoke or fumes

A device/location in a laboratory, enclosed on five sides, to draw air from the laboratory and to prevent or minimize the escape of the air contaminants into the laboratory.  Chemical manipulations may be conducted in the enclosure without inserting any portion of the employees body other than hands and arms.

An inlet designed to catch contaminated air and conduct it into the exhaust dust system.

A protecting canopy, as over a door or window. Any covering serving the protective purpose of a clothing hood.

a hood is a generic term for a device designed to capture contaminated air and conduct it into an exhaust duct system. The term may include enclosures, canopy hoods, push-pull hoods, down draft hoods, side draft hoods or others.

The protruding canopy, particularly seen on Victorian register grates, also called the canopy. It is designed to catch the fire's smoke more effectively protecting the mantel piece.

A shaped inlet designed to capture contaminated air and conduct it into the exhause dust system.

An air-intake device used to capture by entrapment, impingement, adhesion or similar means, grease and similar contaminants before they enter a duct system. Type I. A kitchen hood for collecting and removing grease vapors and smoke. Type II. A general kitchen hood for collecting and removing steam, vapor, heat and odors.

A shaped inlet designed to capture contaminated air and transport it into the exhaust duct system. Hood types include canopy, side draft, slotted, downdraft, etc.

Ventilating exhaust fan, with a metal canopy, used to collect, trap and pass along heat and fumes.