Home » Product » Diamond Pattern GrilleSelect a CategoryCritical EnvironmentSupply GrillesReturn GrillesHinged Filter GrillesRemovable Filter GrillesCeiling DiffusersBar GrillesDampersDrum LouversAir ExtractorsAccessoriesArchitectural GrillesSecurity ProductsDoor GrillesAluminum ProductsDiamond Pattern Grille 1/2 Diamond – 53% Open 3/4″ Diamond – 56% Open 1″ Diamond – 64% Open