Transcription of NEW DUCT SIZING CHART - HVACDirect.com
1 DesignCFM4"CFM6"CFM8"CFM10"CFM12"606x460 4x6904x81204x101504x12908x41106x61606x82 156x102706x1212010x41608x62308x83108x104 008x1215012x421510x631010x843010x1055010 x1218014x427012x640012x855012x1068012x12 21016x432014x649014x867014x1080014x12240 18x437516x658016x880016x1095016x1227020x 443018x667018x893018x10110018x1230022x44 9020x675020x8106020x10125020x1233024x454 022x684022x8120022x10140022x1260024x6930 24x8132024x10160024x1265026x6102026x8143 026x10175026x1271028x6110028x8155028x101 95028x1277530x6120030x8167030x10215030x1 24021/2 x10130032x8180032x10230032x127021/2 x14140034x8193034x10245034x1215021/2 x30150036x8206036x10260036x1210031/2 x14220038x10275038x1222031/2 x30235040x10290040x12305042x12 Flex duct =.
2 05" on most metal duct calculator Round metal pipe = .06" on most metal duct calculatorsFIELD duct SIZING CHARTR ectangular sheet metal duct = .07" on most metal duct calculatorsDuct SizeDuct Height - Net inside dimension in inchesROUND duct SIZE ESTIMATE RECTANGULAR duct SIZE ESTIMATE14"5"6"7"8"16"18"20"Design Airflow50751109"10"12"130017001602253004 807001000 duct Size5"6"7"8"18"20"9"10"12"Flexible DuctRound Metal Pipe750120014"16"Design Airflow508512515002000180240325525