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[{"$nulls":8},"Input Data",{"$nulls":12},"Nominal Duct","Core Area","H & W"]
[null,"Enter Duct Width in inches =",{"$nulls":6},14,"Inches",{"$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 =",{"$nulls":6},14,"Inches",{"$nulls":11},1.3611111111111112,1.2191840277777777,0.75]
[null,"Enter Minimum Neck Velocity (greater than 0)=",{"$nulls":6},400,"FPM"]
[null,"Enter Maximum Neck Velocity =",{"$nulls":6},1300,"FPM",{"$nulls":16},"Throw Zones"]
[{"$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,400,487.6736111111111,0.016625077994994814,"17 - 25 - 41",0.022610106073192943,"13 - 19 - 31",0.02859513415139107,"8 - 11 - 18"," - ",34.284192813757976,22.57555992679556,23.749918092485412," - "," - "," - ",{"$nulls":9},"m","b",null," "," "]
[null,null,null,512.5,624.8318142361111,0.027291754013267857,"21 - 32 - 46",0.037116785458044275,"17 - 25 - 36",0.0469418169028207,"10 - 14 - 21",13.590214423127305,40.05929451822512,29.380351892362707,30.434439962328664,18.975923697670222," - "," - ",{"$nulls":8},"0 Degrees",0,1.666666666666667]
[null,null,null,625,761.9900173611111,0.04058856932371781,"26 - 36 - 51",0.05520045428025621,"20 - 28 - 39",0.06981233923679461,"12 - 16 - 23",19.518959517651453,44.68361704009245,34.829182814016114,35.7869664826357,26.45720497102567,16.40115816014676,10.810784631564752,{"$nulls":8},"22.5 Degrees",0,2.2666666666666666]
[null,14,null,737.5,899.1482204861111,0.05651552392634468,"31 - 39 - 55",0.07686111253982875,"24 - 30 - 43",0.09720670115331283,"14 - 18 - 25",24.463722800239807,48.54045012169944,39.37368230671799,40.25114502037376,32.696833148221366,24.568467691873106,19.20774766622466,{"$nulls":8},"45 Degrees",0,2.8666666666666663]
[null,"x",1.3611111111111112,850,1036.306423611111,0.07507261782114845,"34 - 42 - 59",0.10209876023676187,"26 - 32 - 46",0.1291249026523753,"15 - 19 - 27",28.70510102443872,51.84865456179855,43.271733656536945,44.080300948943766,38.048883704623925,31.57398986118184,26.410255476864872,{"$nulls":14},"Coefficients from 880 New Sound Regression..xls"]
[null,14,null,962.5,1173.464626736111,0.09625985100812917,"36 - 45 - 63",0.13091339737105565,"28 - 35 - 49",0.16556694373398212,"16 - 20 - 28",32.41850990399173,54.745051698264966,46.68455320014302,47.43280121530011,42.73470774799028,37.70746036399938,32.716190728402886,{"$nulls":8},"Sound",{"$nulls":6},"2","3","4","5","6","7","NC"]
[null,null,null,1075,1310.622829861111,0.12007722348728676,"38 - 47 - 67",0.16330502394270996,"30 - 36 - 52",0.20653282439813317,"17 - 21 - 30",35.72096138042174,57.32090889845633,49.71968111256614,50.414285294611396,46.901958657394395,43.16214886576969,38.32425756326764,{"$nulls":10},"B","CVn","CAn",null,"M(An)",9.732037858594214,9.732037858594222,9.73203785859422,9.732037858594229,9.73203785859424,9.435504715179798]
[null,null,null,1187.5,1447.781032986111,0.1465247352586213,"40 - 49 - 70",0.19927363995172495,"31 - 38 - 54",0.2520225446448286,"18 - 22 - 31",38.694419727196546,59.64015693182599,52.45244690462544,53.09875129954053,50.65406435466496,48.07343648661881,43.373643832351,{"$nulls":8},"0 deg",null,-172.6,68.79,9.6,null,"M(Vn)",53.65505536290635,63.22165536290803,62.10425536290874,86.80375536290886,113.62105536291052,116.81592305706788]
[null,null,null,1300,1584.939236111111,0.17560238632213274,"42 - 52 - 73",0.23881924539810048,"33 - 40 - 57",0.3020361044740682,"19 - 23 - 33",41.39853632973983,61.74932288643006,54.937673360609004,55.540053058741414,54.06629688904416,52.53984995086264,47.965646695849124,{"$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,2.032,230.1562928125,4.139644420753709,"5.1 - 7.6 - 12.3",5.629916412225043,"3.9 - 5.9 - 9.6",7.1201884036963765,"2.3 - 3.4 - 5.6"," - ",34.284192813757976,22.57555992679556,23.749918092485412," - "," - "," - "]
[null,null,null,2.6035000000000004,294.8877501660156,6.795646749303696,"6.5 - 9.7 - 14.0",9.242079579053025,"5.0 - 7.5 - 10.8",11.688512408802353,"2.9 - 4.4 - 6.3",13.590214423127305,40.05929451822512,29.380351892362707,30.434439962328664,18.975923697670222," - "," - "]
[null,null,null,3.1750000000000003,359.61920751953124,10.106553761605735,"7.9 - 10.9 - 15.4",13.744913115783797,"6.1 - 8.5 - 12.0",17.38327246996186,"3.6 - 4.9 - 6.9",19.518959517651453,44.68361704009245,34.829182814016114,35.7869664826357,26.45720497102567,16.40115816014676,10.810784631564752]
[null,355.59999999999997,null,3.7465,424.35066487304687,14.072365457659826,"9.3 - 11.9 - 16.8",19.138417022417357,"7.2 - 9.2 - 13.0",24.204468587174894,"4.2 - 5.3 - 7.5",24.463722800239807,48.54045012169944,39.37368230671799,40.25114502037376,32.696833148221366,24.568467691873106,19.20774766622466]
[null,"x",0.12645136,4.3180000000000005,489.0821222265625,18.693081837465964,"10.4 - 12.7 - 18.0",25.422591298953705,"8.1 - 9.9 - 13.9",32.15210076044145,"4.7 - 5.7 - 8.1",28.70510102443872,51.84865456179855,43.271733656536945,44.080300948943766,38.048883704623925,31.57398986118184,26.410255476864872]
[null,355.59999999999997,null,4.8895,553.8135795800781,23.968702901024162,"11.1 - 13.5 - 19.1",32.59743594539285,"8.6 - 10.5 - 14.8",41.22616898976155,"5.0 - 6.1 - 8.6",32.41850990399173,54.745051698264966,46.68455320014302,47.43280121530011,42.73470774799028,37.70746036399938,32.716190728402886]
[null,null,null,5.461,618.5450369335938,29.899228648334404,"11.7 - 14.3 - 20.2",40.66295096173478,"9.1 - 11.1 - 15.7",51.42667327513516,"5.3 - 6.4 - 9.1",35.72096138042174,57.32090889845633,49.71968111256614,50.414285294611396,46.901958657394395,43.16214886576969,38.32425756326764]
[null,null,null,6.032500000000001,683.2764942871094,36.48465907939671,"12.3 - 15.0 - 21.3",49.61913634797951,"9.5 - 11.7 - 16.5",62.75361361656232,"5.5 - 6.8 - 9.6",38.694419727196546,59.64015693182599,52.45244690462544,53.09875129954053,50.65406435466496,48.07343648661881,43.373643832351]
[null,null,null,6.604,748.007951640625,43.72499419421105,"12.8 - 15.7 - 22.3",59.46599210412702,"10.0 - 12.2 - 17.2",75.20699001404299,"5.8 - 7.1 - 10.0",41.39853632973983,61.74932288643006,54.937673360609004,55.540053058741414,54.06629688904416,52.53984995086264,47.965646695849124]
[]
[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."]