28" x 34" or 34" x 28" Cube Core Eggcrate Return Air Grille with filter See chart below: CRFG126 Curved Blade Steel hp birdscreen close

See chart below:

+ Product Details Size – 10" x 20" or 20" x 10" is the size for the duct opening measurement only

Actual Front End Outer Dimensions Are 16" Width X 10" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

actual front end outer dimensions are 25

Performance – High diffusion induction rates result in rapid temperature and velocity equalization of the mixed air mass well above the zone of occupancy

28" x 34" or 34" x 28" Cube Core Eggcrate Return Air Grille with filter See chart below: CRFG126 Curved Blade Steel hp birdscreen close See chart below: + Product Details Size – 10" x 20" or 20" x 10" is the size for the duct opening measurement only