A twelve inch by twenty-four inch return grille connects to a twenty-six gauge sheetmetal sound boot fitted with one inch duct liner, trim, and seal. Internal acoustic baffles are set at thirty-degree angles with specified clearances of three and one-quarter inches and four and one-half inches. Support hangers are integrated at the top corners of the assembly.
30° 4" 30° 3 1/4" 4 1/2" 3 1/2" 12" TRIM & SEAL 12" X 24" RETURN GRILLE HANGER SUPPORT 26 GAUGE SHEETMETAL 12" 1" DUCT LINER,
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