16"x20" Stamped Face Steel Filter Return Grille Vent Cover White Poweder Coating with Frame Outside Dimension 18.6"x22.6" Listed size of 8" is

Listed size of 8" is for the duct opening measurement

9" and two screws are included

Actual outside measurement is 16" x 10"

actual outside dimension is 22

EASY INSTALLATION: Simply adjust the length to the each side of metal vents and place them firmly on the frame surface

16"x20" Stamped Face Steel Filter Return Grille Vent Cover White Poweder Coating with Frame Outside Dimension 18.6"x22.6" Listed size of 8" isThe Listed size 16"x20" is for inside duct opening measurement, actual outside dimension is 18. 6"x22. 6" Stamped Face Steel Construction with 1 2" fin spacing for high air flow Screws are included for easy installation White Powder coating with matte finish Individually shrink wrapped with card board pad in the back for extra protection