6" x 6" Steel Fixed Bar Return Grille - Sidewall and Ceiling w34h34 With a 4" diameter for

With a 4" diameter for the duct opening measurement

+ Product Details High Quality - Aluminum housing on the outside and on the inside for the best insulation value

10" x 4" Floor Register HVAC Air Supply Grille - Heavy Duty Rigid Built - Plastic Never Rust Vent Duct Cover

+ Product Details Size - 25"w X 14"h is the size for the duct opening measurement only

+ Product Details Size - 16"w X 18"h is the size for the duct opening measurement only

6" x 6" Steel Fixed Bar Return Grille - Sidewall and Ceiling w34h34 With a 4" diameter for+ Product Details Size 6"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 2" wider. High Quality High quality steel with counter sunk screw holes (screws included) and no sharp edges. Installation Location Sidewall and ceiling. Design Heavy gauge steel. Heavier gauge than needed, built for durability and long life in mind, and yet lightweight and easy to handle. Noise free components no