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Flexmaster U.S.A.° Type 1 Acoustical Performance Submittal Data <br />Sound Attenuation - Straight Duct <br />12 <br />9 <br />49 <br />>53 <br />>52 <br />50 <br />36 <br />9 <br />7 <br />31 <br />36 <br />33 <br />32 <br />24 <br />Type 1 6 6 <br />5 <br />16 <br />18 <br />17 <br />16 <br />13 <br />3 <br />2.7 <br />5.6 <br />6.0 <br />5.8 <br />5.6 <br />4.9 <br />1 <br />0.93 <br />1.48 <br />1.55 <br />1.51 <br />1.49 <br />1.36 <br />12 <br />10 <br />47 <br />>50 <br />>51 <br />49 <br />30 <br />9 <br />8 <br />30 <br />33 <br />36 <br />31 <br />20 <br />Type 1 8 6 <br />5 <br />16 <br />17 <br />18 <br />16 <br />11 <br />3 <br />2.8 <br />5.4 <br />5.8 <br />6.0 <br />5.6 <br />4.6 <br />1 <br />0.95 <br />1.46 <br />1.51 <br />1.55 <br />1.48 <br />1.30 <br />12 <br />18 <br />>49 <br />39 <br />>48 <br />38 <br />28 <br />9 <br />12 <br />32 <br />25 <br />33 <br />25 <br />19 <br />Type 1 12 6 <br />8 <br />17 <br />14 <br />18 <br />14 <br />11 <br />3 <br />3.5 <br />5.6 <br />5.0 <br />5.8 <br />5.2 <br />4.3 <br />1 <br />1.12 <br />1.49 <br />1.39 <br />1.51 <br />1.41 <br />1.26 <br />Sound Attenuation - 901 Elbow <br />12 7 39 >52 >51 >50 44 <br />9 5 25 37 35 33 28 <br />Type 1 6 <br />6 4 14 19 18 17 15 <br />3 2.3 2.7 6.0 5.9 5.8 5.3 <br />12 10 47 >52 >52 49 32 <br />9 8 30 35 37 31 21 <br />Type 1 8 <br />6 6 16 18 19 16 12 <br />3 2.8 5.5 5.9 6.1 5.7 4.6 <br />12 14 >51 >52 >52 46 25 <br />9 10 35 33 34 29 17 <br />Type 1 12 <br />6 7 18 17 17 15 10 <br />3 3.2 5.9 5.8 5.8 5.4 4.1 <br />Notes: <br />1. Acoustical testing was performed in accordance with ASTM E477 and ADC Test Code FD 72-RI by ETL. <br />2. Insertion loss values are for flow velocities less than 2,500 fpm. <br />3. The 63 Hz IL values were laboratory measured, but were not published due to lack of acoustical value. <br />Flexmaster U.S.A ° <br />5235 Ted Street <br />Houston, TX 77040 USA <br />Tel. +1.713.462.7694 <br />Fax + 1.713.939.8441 <br />www.FlexmasterUSA.com <br />www.Masterduct.com <br />A FLEXMASTER U.S.A.' <br />A MASTERDUCT COMPANY <br />121421 1B <br />