24"w X 6"h Aluminum Adjustable Return/Supply HVAC Air Grille Material_Aluminum accordion-container { border: 1px solid

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R value rating of insulation - R3

but still light and handy

Design – Cubic core eggcrate design Offers highest airflow efficiency at almost 95%

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24"w X 6"h Aluminum Adjustable Return/Supply HVAC Air Grille Material_Aluminum accordion-container { border: 1px solid+ Product Details Size 24"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 85" width X 7. 85" height. High Quality Rigid aluminum construction with counter sunk screw holes (screws included) and no sharp edges. Installation Location Sidewall and ceiling. Design Unrestricted airflow for your HVAC system adjustable one way louver with full horizontal airflow directional control single