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.

Grille length inches grille height inches please fill in either cfm cubic feet per minute value or fpm feet per minute value. Use the calculator below to quickly and easily determine the grille airflow. Return a return draws air into a return duct system with negative pressure compared to the space usually via a fixed grille but. This is critical if the grille is on the wall.

You must order by the duct opening size width x height. 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. You may order a horizontal grille blades run in the long direction or a vertical grille blades run in the short direction. Written by kupis on january 23 2020 in chart.

Known cfm calculate fpm based on known cfm. Supply grille sizing chart yoskin. Air flow calculator linear bar grilles. Duct system sizes and airflow quick chart created date.

If you are ordering a wall return air grille or return air filter grille please note that these are directional. First let s define some terms. Grilles diffusers and a c accessories grilles diffusers and a c accessories ering piping and ductwork systems energy.