Supply Air Grille Sizing Chart

Duct system sizes and airflow quick chart created date.

Supply air grille sizing chart.

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. Air flow calculator linear bar grilles. You may order a horizontal grille blades run in the long direction or a vertical grille blades run in the short direction.

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. First let s define some terms. Supply grille sizing chart yoskin.

Known cfm calculate fpm based on known cfm. 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. Supply grille sizing chart yoskin. This is critical if the grille is on the wall.

You must order by the duct opening size width x height. Use the calculator below to quickly and easily determine the grille airflow. Grilles diffusers and a c accessories grilles diffusers and a c accessories ering piping and ductwork systems energy.