Specifications

Total Exhaust Hood
Pg.7
Figure 15.1
14. Airflow Chart Specifications
Model #
Supply (CFM)
(60-70 FPM)
Exhaust (CFM)
Hand Intake (CFM)
(100-110 FPM)
Base Vent
(CFM)
TXH-4 535 846 271 40
TXH-5 673 1054 341 40
TXH-6 811 1262 411 40
TXH-8 1088 1679 551 40
Calculations are based on an average of: 105 FPM for Hand Intake, and 65 FPM for down flow
velocity measured at 6” below diffuser screen.
15. Airflow Direction
When the Total Exhaust Hood is
operating, the fans draw lab air into the
hood from the top through the pre-filter
and the HEPA/ULPA filter, and then
pushes the cleaned air down to the work
surface. Figure15.1 shows the direction
of airflow in the hood.