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[]
[{"$nulls":8},"Input Data",{"$nulls":12},"Nominal Duct","Core Area","H & W"]
[null,"Enter Duct Width in inches =",{"$nulls":6},22,"Inches",{"$nulls":11},"Area '( ft2 )","( ft2 )","border",null,null," Free area & Core Area Ratio",null,"Ak/Ac",0.78,null,null," - "]
[null,"Enter Duct Height in inches =",{"$nulls":6},22,"Inches",{"$nulls":11},3.361111111111111,3.1358506944444446,0.75]
[null,"Enter Minimum Air Flow (must be greater than 0)=",{"$nulls":6},1350,"CFM"]
[null,"Enter Maximum Air Flow =",{"$nulls":6},3500,"CFM",{"$nulls":16},"Throw Zones"]
[{"$nulls":27},"c(ii)","c(iii)","c(iv)"]
[{"$nulls":26},"0 Degrees",1.8,5,13]
[null,"AF80 / AF880 H or V, AF580 / AF5880 H or V Supply Grille",{"$nulls":24},"22.5 Degrees",1.395,3.875,10.075]
[null,null,null,"IP Data",{"$nulls":22},"45 Degrees",0.81,2.25,5.85]
[null,"Nom","Duct ","Neck","Air","0°",null,"22.5°",null,"45°"]
[null,"Duct","Area","Vel","Flow","Pt","Throw","Pt","Throw","Pt","Throw","Nc","Octave Band, dB"]
[null,"in","ft²","FPM","CFM","\"WG","ft","\"WG","ft","\"WG","ft",null,2,3,4,5,6,7,{"$nulls":8},"Pressure Constants",null,null,null," "]
[null,null,null,430.50519031141863,1350,0.019257525979029626,"29 - 43 - 68",0.026190235331480287,"22 - 33 - 52",0.03312294468393095,"13 - 19 - 30",12.320493375064146,40.099637481394694,28.69635516455645,29.835047709539225,16.506396998237875," - "," - ",{"$nulls":9},"m","b",null," "," "]
[null,null,null,516.2076124567474,1618.75,0.027688059417851647,"35 - 52 - 74",0.03765576080827823,"27 - 40 - 57",0.047623462198704815,"16 - 23 - 33",17.744310604540928,44.330124670315485,33.6811306207766,34.73172063091107,23.35052701598218,11.067152925428159," - ",{"$nulls":8},"0 Degrees",0,1.666666666666667]
[null,null,null,601.910034602076,1887.5,0.0376449631213867,"40 - 56 - 80",0.05119714984508591,"31 - 44 - 62",0.0647493365687851,"18 - 25 - 36",22.333097439413976,47.90930204600514,37.898468893900514,38.874520302359116,29.140960652075506,18.646492989590172,13.003888378265229,{"$nulls":8},"22.5 Degrees",0,2.2666666666666666]
[null,22,null,687.6124567474048,2156.25,0.04912823708963481,"46 - 60 - 85",0.06681440244190333,"36 - 47 - 66",0.08450056779417185,"21 - 27 - 38",26.30999538348216,51.011216268444514,41.55344885077412,42.46490096045818,34.15927256136678,25.215170725825317,19.757268291625905,{"$nulls":8},"45 Degrees",0,2.8666666666666663]
[null,"x",3.361111111111111,773.3148788927335,2425,0.06213788132259595,"52 - 64 - 91",0.08450751859873047,"40 - 50 - 70",0.10687715587486499,"23 - 29 - 41",29.819154237017116,53.74830178325266,44.77855179672389,45.63300239306392,38.5873604615243,31.01127964245194,25.716355813497785,{"$nulls":14},"Coefficients from 880 New Sound Regression..xls"]
[null,22,null,859.0173010380622,2693.75,0.07667389582027011,"55 - 67 - 95",0.10427649831556733,"43 - 52 - 74",0.13187910081086454,"25 - 30 - 43",32.95911124774834,56.197416004039525,47.66433868416095,48.46778494900238,42.549565145483626,36.197574588715156,31.048482235478843,{"$nulls":8},"Sound",{"$nulls":6},"2","3","4","5","6","7","NC"]
[null,null,null,944.7197231833909,2962.5,0.09273628058265733,"58 - 71 - 100",0.12612134159241395,"45 - 55 - 78",0.15950640260217055,"26 - 32 - 45",35.800211957151916,58.413427282635894,50.27546079349702,51.03275724102946,46.1346532533548,40.89024592168147,35.873105027557244,{"$nulls":10},"B","CVn","CAn",null,"M(An)",9.732037858594214,9.732037858594222,9.73203785859422,9.732037858594229,9.73203785859424,9.435504715179798]
[null,null,null,1030.4221453287196,3231.25,0.11032503560975758,"60 - 74 - 105",0.15004204842927027,"47 - 57 - 81",0.18975906124878297,"27 - 33 - 47",38.3944342928239,60.4368775376754,52.65968859463979,53.37484542830572,49.40821395960083,45.17514604706429,40.278490646931914,{"$nulls":8},"0 deg",null,-172.6,68.79,9.6,null,"M(Vn)",53.65505536290635,63.22165536290803,62.10425536290874,86.80375536290886,113.62105536291052,116.81592305706788]
[null,null,null,1116.1245674740483,3500,0.12944016090157087,"63 - 77 - 109",0.17603861882613636,"49 - 60 - 84",0.22263707675070185,"28 - 35 - 49",40.78127421114816,62.29857295794116,54.853320964500625,55.529706829643004,52.42008586482896,49.11751078761267,44.33170925790017,{"$nulls":10},-167.6,null,null,null,"B",-106.19017272305152,-142.7916727230564,-138.7097727230585,-217.09637272305886,-302.1303727230637,-316.6532129957984]
[]
[null,"1) Throw values are given for terminal velocities of 150, 100, and 50 fpm, Isothermal Conditions"]
[null,"2) NC values are based on octave band 2 - 7 sound power levels minus a room absorption of 10dB, re 1.0 E-12 watts."]
[null,"Sound data is based on 0° blade deflection. A setting of 22.5° and 45° increase sound by "]
[null,"4 or 9 dB/NC respectively.  Dash (-) in space denotes an NC or dB value of less than 10."]
[null,"3) When selecting larger supply grilles for cooling purposes, account for drop by referring to the Engineering Guidelines."]
[null,"4) See K-Select program for performance data not shown, including octave band data."]
[]
[null,"AF80 / AF880 H or V, AF580 / AF5880 H or V Supply Grille"]
[null,null,null,"Metric Data"]
[null,"Nom","Duct ","Neck","Air","0°",null,"22.5°",null,"45°"]
[null,"Duct","Area","Vel","Flow","Pt","Throw","Pt","Throw","Pt","Throw","Nc","Octave Band, dB"]
[null,"mm","m²","m/s","L/s","Pa","m","Pa","m","Pa","m",null,2,3,4,5,6,7]
[null,null,null,2.186966366782007,637.12899,4.795123968778377,"8.7 - 13.1 - 20.5",6.521368597538592,"6.8 - 10.2 - 15.9",8.247613226298807,"3.9 - 5.9 - 9.2",12.320493375064146,40.099637481394694,28.69635516455645,29.835047709539225,16.506396998237875," - "," - "]
[null,null,null,2.6223346712802766,763.96485375,6.89432679504506,"10.5 - 15.7 - 22.5",9.37628444126128,"8.1 - 12.2 - 17.4",11.8582420874775,"4.7 - 7.1 - 10.1",17.744310604540928,44.330124670315485,33.6811306207766,34.73172063091107,23.35052701598218,11.067152925428159," - "]
[null,null,null,3.0577029757785463,890.8007175,9.373595817225288,"12.2 - 17.2 - 24.3",12.748090311426392,"9.5 - 13.3 - 18.8",16.12258480562749,"5.5 - 7.7 - 10.9",22.333097439413976,47.90930204600514,37.898468893900514,38.874520302359116,29.140960652075506,18.646492989590172,13.003888378265229]
[null,558.8,null,3.493071280276817,1017.6365812500001,12.232931035319067,"14.0 - 18.4 - 26.0",16.63678620803393,"10.8 - 14.2 - 20.1",21.04064138074879,"6.3 - 8.3 - 11.7",26.30999538348216,51.011216268444514,41.55344885077412,42.46490096045818,34.15927256136678,25.215170725825317,19.757268291625905]
[null,"x",0.31225744000000005,3.9284395847750866,1144.472445,15.472332449326391,"15.7 - 19.5 - 27.5",21.042372131083887,"12.2 - 15.1 - 21.3",26.612411812841383,"7.1 - 8.8 - 12.4",29.819154237017116,53.74830178325266,44.77855179672389,45.63300239306392,38.5873604615243,31.01127964245194,25.716355813497785]
[null,558.8,null,4.363807889273357,1271.3083087500002,19.091800059247255,"16.7 - 20.5 - 29.0",25.964848080576264,"13.0 - 15.9 - 22.5",32.83789610190527,"7.5 - 9.2 - 13.1",32.95911124774834,56.197416004039525,47.66433868416095,48.46778494900238,42.549565145483626,36.197574588715156,31.048482235478843]
[null,null,null,4.799176193771626,1398.1441725,23.091333865081676,"17.6 - 21.5 - 30.4",31.404214056511073,"13.6 - 16.7 - 23.6",39.717094247940466,"7.9 - 9.7 - 13.7",35.800211957151916,58.413427282635894,50.27546079349702,51.03275724102946,46.1346532533548,40.89024592168147,35.873105027557244]
[null,null,null,5.234544498269896,1524.98003625,27.470933866829636,"18.3 - 22.5 - 31.8",37.360470058888296,"14.2 - 17.4 - 24.6",47.25000625094696,"8.3 - 10.1 - 14.3",38.3944342928239,60.4368775376754,52.65968859463979,53.37484542830572,49.40821395960083,45.17514604706429,40.278490646931914]
[null,null,null,5.669912802768166,1651.8159,32.23060006449115,"19.1 - 23.4 - 33.1",43.83361608770795,"14.8 - 18.1 - 25.6",55.43663211092476,"8.6 - 10.5 - 14.9",40.78127421114816,62.29857295794116,54.853320964500625,55.529706829643004,52.42008586482896,49.11751078761267,44.33170925790017]
[]
[null,"1) Throw values are given for terminal velocities of 0.75,0.5 and 0.25 m/s Isothermal Conditions"]
[null,"2) NC values are based on octave band 2 - 7 sound power levels minus a room absorption of 10dB, re 1.0 E-12 watts."]
[null,"Sound data is based on 0° blade deflection. A setting of 22.5° and 45° increase sound by "]
[null,"4 or 9 dB/NC respectively.  Dash (-) in space denotes an NC or dB value of less than 10."]
[null,"3) When selecting larger supply grilles for cooling purposes, account for drop by referring to the Engineering Guidelines."]
[null,"4) See K-Select program for performance data not shown, including octave band data."]