return grille

return grille

return grille
A grille, 2 through which return air is extracted; usually not provided with an adjustment for volume of airflow.
References in periodicals archive ?
four (4) supply and return grille with merv 8 filter kits 5.
In the base case analysis, both the supply diffusers and the return grille are located at the ceiling with the linear supply diffuser placed directly above the patient's head (Figure 1a).
Noise can travel through open return air grilles in the ceiling, through a common plenum above the ceiling and back down, or through the open air return grille in the adjacent room.
These capturing elements are of varying sizes that rarely match the dimensions of a return grille.
bypassed or the air handier is pulling its air from somewhere other than the return grille.
The instruction card gives clear directions on how to hook up the components to measure duct air velocity, supply grille velocity, return grille velocity static pressure, and, if needed, furnace draft and air filter test.
If an air-handling unit is located in a room adjacent to the corridor, for example, it is unacceptable to place a return grille serving that air-handling unit directly into the corridor wall, and use transfer openings from each office into the corridor proper.
Air supply to classrooms is delivered through sidewall diffusers located at floor level and return grille located at ceiling level.
The return grille was located directly below the supply diffuser, with the lower edge of the opening 4 in.
A branch may be a major junction or a take-off for a terminal diffuser or return grille.
For systems that have filters located at a return grille, any leakage into the return duct will not be filtered.