20"W X 10"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 21.875"W X 11.875"H] Compatible With Duct 10in + Product Details Size -

+ Product Details Size - 30"w X 32"h is the size for the duct opening measurement only

+ Product Details Heavy-Duty Steel Construction - Made from 20-gauge steel for superior durability and reliable performance

Universal Fit – Dimensions of 6-3/8" wide x 3-1/2" high x 3" deep make it compatible with most standard thermostat models

+ Product Details Size – 16" x 24" or 24" x 16" is the size for the duct opening measurement only

R value rating of insulation - r3

20"W X 10"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 21.875"W X 11.875"H] Compatible With Duct 10in + Product Details Size -+ Product Details Size 20"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 875" width X 11. 875" height. High Quality High quality aluminum with counter sunk screw holes (screws included) and no sharp edges. Design Unrestricted airflow For Your HVAC system noise free components no vibrating louvers etc. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was