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[{"$nulls":30},"1330 Security Grilles"]
[{"$nulls":10},"Input Data",{"$nulls":12},"Nominal Duct","Core Area","H & W",null,null," "," "]
[null,"Enter Duct Width in inches =",{"$nulls":8},8,"Inches",{"$nulls":11},"Area '( ft2 )","( ft2 )","border",null,null," Free area & Core Area Ratio",null,"Ak/Ac",0.975,"Ak Consts.",null," - ","\""," "," "]
[null,"Enter Duct Height in inches =",{"$nulls":8},12,"Inches",{"$nulls":11},0.6666666666666666,0.6499999999999999,0.75,{"$nulls":4},"Eff. Ak",0.73125,"M",0.75]
[null,"Enter Minimum Neck Velocity (greater than 0)=",{"$nulls":8},310,"FPM",{"$nulls":20},"B",0]
[null,"Enter Maximum Neck Velocity =",{"$nulls":8},800,"FPM",{"$nulls":16},"Throw Zones",{"$nulls":6},"Ac*Eff Ak = "]
[{"$nulls":29},"c(ii)","c(iii)","c(iv)",null,null,null,0.4753124999999999]
[{"$nulls":28}," ",1.8,8,11.3]
[null,"1330 Medium/Minimum Security Supply Grille"]
[null,"IP Data",{"$nulls":5},"Metric Data",{"$nulls":27},"Band","Slope 1","Slope 2","Const"]
[null,"Nom","Duct","Neck","Air","Entrained",null,"Nom","Duct","Neck","Air","Entrained",null,null,"Estimated",{"$nulls":20},2]
[null,"Duct","Area","Vel","Flow","Pt","Throw","Duct","Area","Vel","Flow","Pt","Throw","NC","Octave Band, dB",{"$nulls":20},3]
[null,"in","ft²","FPM","CFM","\"WG","ft","mm","m²","m/s","L/s","Pa","m",null,2,3,4,5,6,7,{"$nulls":8},"Pressure Constants",null,null,null," ",null,null,4]
[null,null,null,310,206.66666666666666,0.04104014800475684,"10 - 16 - 23",null,null,1.5748000000000002,97.535796,10.218996853184453,"3.2 - 4.9 - 7.0",11.007972876667946,"*","*",24.007972876667946,21.007972876667946," - ","*",{"$nulls":9},"m","b",null,null," ",null,5]
[null,null,null,371.25,247.5,0.05885975571266255,"15 - 18 - 25",null,null,1.88595,116.8069815,14.656079172452975,"4.4 - 5.4 - 7.6",16.429011999299586,"*","*",29.429011999299586,26.429011999299586,11.429011999299586,"*",{"$nulls":8},"0 Degrees",0,6.85,{"$nulls":4},6]
[null,null,null,432.5,288.3333333333333,0.07988362315520081,"16 - 19 - 27",null,null,2.1971000000000003,136.078167,19.891022165645,"4.8 - 5.8 - 8.2",21.02032133249291,"*","*",34.020321332492905,31.02032133249291,16.02032133249291,"*",{"$nulls":15},7]
[null,"8\"",null,493.75,329.16666666666663,0.10411175033237165,"17 - 21 - 29",203.2,null,2.5082500000000003,155.34935249999998,25.92382583276054,"5.1 - 6.2 - 8.8",25.002499943288807,"*","*",38.002499943288804,35.002499943288804,20.002499943288807,"*"]
[null,"x",0.6666666666666666,555,370,0.13154413724417513,"18 - 22 - 31","x",0.06193536,2.8194000000000004,174.620538,32.75449017379961,"5.4 - 6.6 - 9.3",28.5184060341041,"*","*",41.518406034104096,38.518406034104096,23.5184060341041,"*",{"$nulls":14}," "]
[null,"12\"",null,616.25,410.8333333333333,0.1621807838906111,"19 - 23 - 32",304.79999999999995,null,3.1305500000000004,193.8917235,40.383015188762165,"5.7 - 7.0 - 9.8",31.665875234631624,"*","*",44.66587523463162,41.66587523463162,26.665875234631624,"*",{"$nulls":8},"Sound",{"$nulls":6},"2","3","4","5","6","7","NC"]
[null,null,null,677.5,451.66666666666663,0.19602169027167973,"20 - 24 - 34",null,null,3.4417000000000004,213.16290899999998,48.80940087764825,"6.0 - 7.3 - 10.3",34.51485362012151,"*","*",47.51485362012151,44.51485362012151,29.51485362012151,"*",{"$nulls":10},"B","CVn","CAn",null,"M(An)"]
[null,null,null,738.75,492.5,0.23306685638738095,"20 - 25 - 35",null,null,3.75285,232.43409450000001,58.03364724045785,"6.2 - 7.6 - 10.8",37.1170843144783,"*","*",50.1170843144783,47.1170843144783,32.1170843144783,"*",{"$nulls":8},"0 deg",null,-159,69.23,10,null,"M(Vn)"]
[null,null,null,800,533.3333333333333,0.2733162822377146,"21 - 26 - 37",null,null,4.064,251.70527999999996,68.05575427719093,"6.5 - 7.9 - 11.2",39.51192261197347,"*","*",52.51192261197347,49.51192261197347,34.51192261197347,"*",{"$nulls":9},"Teams",-159,null,null,null,"B"]
[{"$nulls":28},"Use core area and velocity for sound on this unit."]
[]
[null,"1)  Throw values are given for terminal velocities of 150, 100, and 50 fpm (0.75,0.5 and 0.25 m/s), Isothermal Conditions"]
[null,"2) Dash (-) in space denotes an NC or dB value of less than 10."]
[null,"3) Data were obtained from test conducted in accordance with ANSI / ASHRAE Standard 70-1991."]
[null,"4) Octave Band data was estimated using the guidelines stated in the Engineering Section of Krueger's Catalog."]
[null,"5) NC assumes a room absorption of 10dB."]
[{"$nulls":41}," "]