150 x 150 – 125mm Spigot Size Fixed Core Egg Crate Grille

The 150 x 150 – 125mm Spigot Size Fixed Core Egg Crate Grille is a fixed core egg crate grille used on return or transfer air openings where airflow needs minimal resistance. Its open egg-crate face gives good airflow with a low profile — the spigot size in the name refers to the duct connection size behind the grille face.