Specification Sheet

411
RPM
Sound Performance Sones / LwA (Inches w.g.)
0 0.125 0.25 0.375 0.5 0.625 0.75 0.875 1
800 12.8 / 75 11.9 / 74 - - - - - - -
850 14.3 / 77 13.4 / 76 12.6 / 75 - - - - - -
900 15.8 / 78 14.9 / 77 14 / 77 - - - - - -
950 17.3 / 80 16.5 / 79 15.5 / 78 - - - - - -
975 18.1 / 81 17.3 / 80 16.3 / 79 16.1 / 79 - - - - -
1025 19.6 / 82 18.8 / 81 18 / 81 17.6 / 80 - - - - -
1075 21 / 84 21 / 83 19.7 / 82 19.1 / 82 - - - - -
1125 23 / 85 22 / 84 22 / 84 21 / 83 21 / 83 - - - -
1150 24 / 86 23 / 85 23 / 84 22 / 84 22 / 84 - - - -
1200 26 / 87 25 / 86 25 / 86 24 / 85 23 / 85 - - - -
1225 27 / 88 26 / 87 26 / 86 25 / 86 24 / 85 - - - -
1250 28 / 88 28 / 88 27 / 87 26 / 86 25 / 86 25 / 86 - - -
1275 29 / 89 29 / 88
28 / 88 27 / 87 26 / 87 26 / 87 - - -
1325 32 / 90 31 / 90 30 / 89 29 / 88 28 / 88 28 / 88 - - -
1375 34 / 91 33 / 91 32 / 90 31 / 90 30 / 89 30 / 89 - - -
1425 36 / 92 35 / 92 34 / 91 33 / 91 32 / 90 31 / 90 31 / 90 - -
1450 37 / 93 36 / 92 35 / 92 34 / 91 33 / 91 32 / 90 32 / 90 - -
1500 39 / 94 38 / 93 37 / 93 36 / 92 35 / 92 34 / 91 34 / 91 34 / 91 -
1525 40 / 94 39 / 94 38 / 93 37 / 93 36 / 92 35 / 92 35 / 92 35 / 92 -
1550 41 / 94 41 / 94 40 / 94 38 / 93 37 / 93 36 / 92 36 / 92 36 / 92 -
1625 45 / 96 44 / 96 43 / 95 42 / 95 41 / 94 40 / 94 39 / 93 39 / 93 38 / 93
1675 47 / 97 47 / 97 46 / 96 44 / 96 43 / 95 42 / 95 41 / 94 41 / 94 41 / 94
1725 50 / 98 49 / 97 48 / 97 47 / 97 46 / 96 45 / 96 44 / 95 43 / 95 43 / 95
1775 52 / 98 52 / 98 51 / 98 50 / 98 49 / 97 48 / 97 46 / 96 45 / 96 45 / 96
Size 24
The sound ratings shown are loudness values in fan sones at 1.5 m (5 ft) in a hemispherical free eld calculated per
AMCA International Standard 301. Values shown are for: Installation Type A: free inlet hemispherical sone levels.
R
®
AIR
MOVEMENT
AND CONTROL
ASSOCIATION
INTERNATIONAL, INC.
AIR
PERFORMANCE
SOUND
and
S&P USA Ventilation Systems, LLC., Div. of Soler & Palau
Ventilation Group certies that the Models TDB shown
herein are licensed to bear the AMCA Seal. The ratings
shown are based on test and procedures performed
in accordance with AMCA Publication 211 and AMCA
Publication 311 and comply with the requirement of the
AMCA Certied Ratings Program.
MODEL TDB
BELT DRIVE TUBEAXIAL DUCT FAN