32" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R-4.2 Yellow + Product Details Size –

+ Product Details Size – 24"w X 16"h is the size for the duct opening measurement only

Actual Filter Size – 35 3/4"w x 21 3/4" x 1"

actual front end outer dimensions are approximately 18 5/8" width X 38 5/8" height

+ Product Details Size – 14"w X 16"h is the size for the duct opening measurement only

+ Product Details Size - 20"w X 10"h X 2"d (for duct opening measurement only)

32" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R-4.2 Yellow + Product Details Size –Strong aluminum frame & cube core that never rusts Rigid design with noise free components quiet airflow Cubic core eggcrate design has the highest rate of airflow efficiency