Continental 16″ x 24″ White Return Air Grille

Inside rough opening dimensions: 16″ width x 24″ length; Outside dimensions: 17 3/4″ width x 25 3/4″ length; Painted all steel construction; Louvered design with 1/2″ spacing; Pre-punched screw holes for easy installation; Can be used in ceiling or sidewall application; Made in the USA;