Supply Air Grille Sizing Chart

This is critical if the grille is on the wall.

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. Proper sizing and orientation of grilles registers and diffusers may seem like such a simple thing but it s an area where confusion and mistakes are commonly made. Known cfm calculate fpm based on known cfm. Return a return draws air into a return duct system with negative pressure compared to the space usually via a fixed grille but.

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. Use the calculator below to quickly and easily determine the grille airflow. Written by kupis on january 23 2020 in chart. 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. You must order by the duct opening size width x height. 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. Supply grille sizing chart yoskin. Supply grille sizing chart yoskin.