Supply Air Grille Sizing Chart

First calculate the percent of outside air compared to system airflow by dividing the outside air cfm by the total supply airflow.

Supply air grille sizing chart.

Should the system have an outside air intake you must reduce the amount of required return air into each return grille and duct to provide for the outside air entering the return side of the fan. Written by kupis on january 23 2020 in chart. Supply air grille sizing chart. First let s define some terms.

Use the calculator below to quickly and easily determine the grille airflow. Air flow calculator linear bar grilles. Grille length inches grille height inches please fill in either cfm cubic feet per minute value or fpm feet per minute value. If you are ordering a wall return air grille or return air filter grille please note that these are directional.

Supply grille sizing chart yoskin. Known cfm calculate fpm based on known cfm. You must order by the duct opening size width x height. Duct system sizes and airflow quick chart created date.

Return a return draws air into a return duct system with negative pressure compared to the space usually via a fixed grille but. Grilles diffusers and a c accessories grilles diffusers and a c accessories ering piping and ductwork systems energy. You may order a horizontal grille blades run in the long direction or a vertical grille blades run in the short direction.