A lid, stopper, or sliding plate, in a furnace, stove, etc., for regulating the admission of air to the fuel; also, an arrangement containing dampers or shutters, as in the floor or wall of a room or passage, or in a chimney, for admitting or excluding heated air, or for regulating ventilation.

Regulator (Voltage Regulator) Relap

A grille placed over a supply air or return air duct.

A ventilation grille that can be opened and closed.

an air passage (usually in the floor or a wall of a room) for admitting or excluding heated air from the room

a regulator (as a sliding plate) for regulating the flow of air into a furnace or other heating device

an outlet for forced air, usually as part of a forced air heating and coolingsystem

a combination grille and damper assembly covering an air supply outlet, designed to distribute air into a room

A terminal device on an air distribution system that directs air but also has a damper to adjust airflow.

heating duct unit that directs airflow.

The open end of a duct in a room for warm or cool air.

A grille equipped with a damper control valve.

Where air from a furnace or air conditioning system enters the room.

A fixture through which conditioned air flows. In a gravity heating system, it is located near the baseboard. In an air conditioning system, it is located close to the thermostat.

Combination grille and damper assembly covering an air opening or end of an air duct.

A grill placed over a heating duct or cold air return

An opening through which air travels from the ducts into a room.

The end of a duct for incoming or escaping air, usually covered with grillwork.

A grill covering the opening of a duct in a heating or cooling system. Some registers can be opened or closed to regulate the flow of air.