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[{"$nulls":30},"1310 Security Grilles"]
[{"$nulls":10},"Input Data",{"$nulls":12},"Nominal Duct","Core Area","H & W",null,null," "," "]
[null,"Enter Duct Width in inches =",{"$nulls":8},14,"Inches",{"$nulls":11},"Area '( ft2 )","( ft2 )","border",null,null," Free area & Core Area Ratio",null,"Ak/Ac",0.4444,"Ak Consts.",null," - ","\""," "," "]
[null,"Enter Duct Height in inches =",{"$nulls":8},16,"Inches",{"$nulls":11},1.5555555555555556,0.691288888888889,0.75,{"$nulls":4},"Eff. Ak",0.8888,"M",2]
[null,"Enter Minimum Neck Velocity (greater than 0)=",{"$nulls":8},230,"FPM",{"$nulls":20},"B",0]
[null,"Enter Maximum Neck Velocity =",{"$nulls":8},620,"FPM",{"$nulls":16},"Throw Zones",{"$nulls":6},"Ac*Eff Ak = "]
[{"$nulls":29},"c(ii)","c(iii)","c(iv)",null,null,null,0.6144175644444445]
[{"$nulls":28}," ",1,3,11]
[null,"51310 Perforated Face Security Supply Grille"]
[null,"IP Data",{"$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,230,357.77777777777777,0.026032006140908115,"9 - 14 - 27",null,null,1.1684,168.852292,6.481969529086121,"2.8 - 4.2 - 8.3",10.577517146062977,"*","*",23.577517146062977,20.577517146062977," - ","*",{"$nulls":9},"m","b",null," "," ",null,5]
[null,null,null,278.75,433.61111111111114,0.038236815730777994,"11 - 17 - 32",null,null,1.41605,204.64163650000003,9.520967116963721,"3.4 - 5.0 - 9.8",16.320590630319945,"*","*",29.320590630319945,26.320590630319945,11.320590630319945,"*",{"$nulls":8},"0 Degrees",0,7.893270875242338,{"$nulls":4},6]
[null,null,null,327.5,509.44444444444446,0.05278063059831335,"13 - 19 - 35",null,null,1.6637000000000002,240.430981,13.142377018980024,"4.0 - 5.9 - 10.7",21.135644931122247,"*","*",34.13564493112225,31.135644931122247,16.135644931122247,"*",{"$nulls":15},7]
[null,"14\"",null,376.25,585.2777777777778,0.06966345074351417,"15 - 22 - 38",355.59999999999997,null,1.91135,276.22032550000006,17.34619923513503,"4.5 - 6.8 - 11.4",25.281288333137443,"*","*",38.28128833313745,35.28128833313745,20.281288333137443,"*"]
[null,"x",1.5555555555555556,425,661.1111111111111,0.08888527616638049,"17 - 25 - 40","x",0.14451584,2.1590000000000003,312.00966999999997,22.132433765428743,"5.1 - 7.7 - 12.2",28.92113380457369,"*","*",41.92113380457369,38.92113380457369,23.92113380457369,"*",{"$nulls":14}," "]
[null,"16\"",null,473.75,736.9444444444445,0.11044610686691228,"19 - 28 - 42",406.4,null,2.40665,347.7990145,27.50108060986116,"5.7 - 8.6 - 12.8",32.16529035494066,"*","*",45.16529035494066,42.16529035494066,27.165290354940655,"*",{"$nulls":8},"Sound",{"$nulls":6},"2","3","4","5","6","7","NC"]
[null,null,null,522.5,812.7777777777778,0.13434594284510962,"21 - 31 - 44",null,null,2.6543,383.588359,33.452139768432296,"6.3 - 9.5 - 13.5",35.091415524541624,"*","*",48.091415524541624,45.091415524541624,30.09141552454162,"*",{"$nulls":10},"B","CVn","CAn",null,"M(An)"]
[null,null,null,571.25,888.6111111111111,0.1605847841009723,"23 - 33 - 46",null,null,2.9019500000000003,419.3777035,39.9856112411421,"6.9 - 10.0 - 14.1",37.75633450404195,"*","*",50.75633450404195,47.75633450404195,32.75633450404195,"*",{"$nulls":8},"0 deg",null,-174,68.79,10,null,"M(Vn)"]
[null,null,null,620,964.4444444444445,0.18916263063450053,"25 - 34 - 48",null,null,3.1496000000000004,455.167048,47.10149502799063,"7.5 - 10.4 - 14.7",40.202883626997625,"*","*",53.202883626997625,50.202883626997625,35.202883626997625,"*",{"$nulls":9},"Teams",-149.7434745141847,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}," "]