77
Rotation determined opposite shaft end
Double shaft determined at lead end
Shaft length measured from hub
face to shaft end
Duct Boosters
Duct Boosters
Motorized Duct Dampers
Control Options
Manual Control
• 115V Source - continuous operation.
• 115V Switch - manual ON/ OFF ctrl.
Automatic Control
• Wire to furnace fan.
• Wire to fan switch.
• Wire to a sail switch.
• Wire to a pressure switch.
• Wire to thermostat.
In-Line Air Duct Booster Fans
Motorized Dampers
Normally Open
Part #
Normally
Closed Part #
Duct
Dia.
Weight
T9-MD5-NO T9-MD5-NC
5"
3.5
T9-MD6-NO T9-MD6-NC
6"
3.5
T9-MD7-NO T9-MD7-NC
7"
3.5
T9-MD8-NO T9-MD8-NC
8"
4.0
T9-MD10-NO T9-MD10-NC
10"
5.0
T9-MD12-NO T9-MD12-NC
12"
6.0
Features
• Available in normally open or
normally closed 5", 6", 7", 8",
10" and 12" duct diameters.
• 8" Housing lengths.
• 24VAC, 0.25 amps.
• 100% Shutoff available.
• 3 Year limited warranty.
Standard Air Duct Boosters
Part #
Description
Max Boosted
CFM
Free Air
CFM
Watts Amps dBA Blade
Housing
Length
T9-DB68
6" - 8" Universal Round
250
160 30 0.35 50
Polycarbonate 4"×11"
T9-DB6-2CR
6" Rnd Double Crimp
250
160 30 0.35 50
Polycarbonate 8"
T9-DB4
4" Round
80
40
30 0.30 52
Polycarbonate 6"
T9-DB5
5" Round
225
140 30 0.35 51
Polycarbonate 6"
T9-DB6
6" Round
250
160 30 0.35 50
Polycarbonate 6"
T9-DB8
8" Round
500
210 60 0.75 54
Polycarbonate 8"
T9-DB10
10" Round
650
300 120 1.50 55
Aluminium 8"
T9-DB12R
12" Round
800
650 120 1.50 55
Aluminium 8"
T9-MCM14
14" Round
1500
-
71 1.00 -
Aluminium 9"
T9-DB68
T9-DB6
T9-DB5-2
4-Pole Duct Boosters
Designed for larger ducts requiring commercial grade power and performance.
Part #
Description
Max Boosted
CFM
Free Air
CFM
Watts Amps dBA Blade
T9-DB124
12" Round
1160 700 120 1.00 61
Aluminium
T9-DB144
14" Round
1580 900 120 1.00 61
Aluminium
T9-DB164
16" Round
1760 1100 120 1.00 54
Aluminium
Air Duct Booster
Designed to be installed at any angle
in the branch duct of under-ventilated
rooms to increase either hot or cool air
flow supply. One year limited warranty.
4-Pole Duct
Booster
Two Speed Air Duct Boosters
Part #
Description
Max Boosted
CFM
Free Air
CFM
Watts Amps dBA Blade
T9-DB5-2
5" Round 2 Speed 180/270 90/140 30 0.35 50/52
Polycarbonate
T9-DB6-2
6" Round 2 Speed 200/300 160/180 30 0.35 50/52
Polycarbonate
T9-DB8-2
8" Round 2 Speed 500/600 210/250 60 0.85 50/55
Polycarbonate
T9-DB10-2
10" Round 2 Speed 650/900 300/460 135 1.70 56/59
Aluminium
Poor Air Flow
From Main Supply
Enhanced / Air
Flow
To Problem Area
