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SDTF Series Commercial
Spring Return Rectangular Damper
with Belimo two-wire motor in 24v or 120v
These are CUSTOM, Made-To-Order dampers
that take approximately 3-4 business days to make
Please see our Surplus Dampers that are in stock.
How to order a standard damper:
Just buy the damper in the size want, select your voltage, 24 or 120, then select what side you want your motor mounted, long side or short side (all sizes over 24 inches require bottom “long side” motor mount) and if you want it Normally Open (use when hooking up to a zone control system) or Normally Closed (use when hooking up to a thermostat or switch).
When selecting the motor on the short side of any damper over 24” it is considered Jackshafting.
*Jackshafting requires bolting two dampers together and adding a longer shaft to control all the parts together.
Current cost for Jackshafting is $34.00****Additional Time for production as well
Custom Built and Ships in 48 Hours!
The SDTF Damper is a motorized rectangular, opposed blade, damper constructed of an extruded aluminum frame and blades, stainless steel slide, and a Belimo TF spring return motor, available in 24V (standard) or 120 / 230V (optional). The TF actuator, with it's 5 year warranty, delivers 18 in. lbs. of torque. Applications include zone control, outside air, exhaust air vents, although they may be used to control air in any system duct. Standard configuration is power open / spring return closed. Power close / spring return open is optional.
SDTFS Small
Size Dampers
6x6 ($263.00)
8x6 ($263.00)
10x6 ($263.00)
12x6 ($263.00)
14x6 ($265.00)
16x6 ($269.00)
18x6 ($275.00)
20x6 ($277.00)
22x6 ($293.00)
24x6 ($295.00)
8x8 ($263.00)
10x8 ($263.00)
12x8 ($263.00)
14x8 ($265.00)
16x8 ($269.00)
18x8 ($275.00)
20x8 ($277.00)
22x8 ($293.00)
24x08 ($295.00)
10x10 ($267.00)
12x10 ($267.00)
14x10 ($273.00)
16x10 ($275.00)
18x10 ($283.00)
20x10 ($295.00)
22x10 ($297.00)
12x12 ($277.00)
14x12 ($277.00)
16x12 ($283.00)
18x12 ($285.00)
20x12 ($297.00)
14x14 ($283.00)
16x14 ($285.00)
SDTFM Medium
Size Dampers
26x6 ($299.00)
28x6 ($301.00)
30x6 ($307.00)
32x6 ($309.00)
34x6 ($311.00)
36x6 ($313.00)
26x8 ($299.00)
28x8 ($301.00)
30x8 ($307.00)
32x8 ($309.00)
34x8 ($311.00)
36x8 ($313.00)
24x10 ($301.00)
26x10 ($307.00)
28x10 ($309.00)
30x10 ($311.00)
32x10 ($313.00)
34x10 ($319.00)
36x10 ($321.00)
22x12 ($307.00)
24x12 ($309.00)
26x12 ($313.00)
28x12 ($317.00)
18x14 ($289.00)
20x14 ($307.00)
SDTFL Large
Size Dampers
30x12 ($319.00)
32x12 ($321.00)
34x12 ($327.00)
36x12 ($329.00)
20x14 ($307.00)
22x14 ($311.00)
24x14 ($317.00) 26x14 ($321.00)
28x14 ($321.00)
30x14 ($327.00)
32x14 ($329.00)
34x14 ($333.00)
36x14 ($335.00)
16x16 ($297.00)
18x16 ($299.00)
20x16 ($313.00)
22x16 ($317.00)
24x16 ($321.00)
18x18 ($301.00)
20x18 ($319.00)
22x18 ($321.00)
24x18 ($331.00)
20x20 ($333.00)
22x20 ($333.00)
24x20 ($335.00)
22x22 ($335.00)
24x22 ($339.00)
24x24 ($341.00)
SDTF Series Dampers:
Commercial Quality Rectangular Motorized Louver Damper.
Applications include Zone Control, Outside Air Intake, Exhaust Air Vents - control airflow in any HVAC Duct System.
• 2 position Spring Return Belimo TF Actuator
• 18 in. lbs. motor Torque
• Available as PO/SC or PC/SO
• Damper Blade Position Indicator
• The actuator may be stalled anywhere in its normal
rotation without the need of mechanical end switches.
Power consumption is reduced in holding mode.
• 24V or 120V Motor options
• Extruded Aluminum Frame / Blades
with Reinforcing Channels
• Mounting Plate - 5" wide X Damper Height
• Frame - 2 1/2" wide / Blade width 1.438" within Frame
• Standard 1/2” drive shaft accepts many different motors
• Oil Impregnated Bronze Bushings
• 75 Sec - Power Drive / 25 Sec - Spring Return
• 50 dB - Power Drive / 62 dB - Spring Return
• 5 VA / 2.5 Watts
• 5 year warranty
• Works with most zone panels
• Available in odd sizes, one inch increments,
like 9x15 (contact us for pricing)
Rectangular Damper Questions You need to answer
to COMPLETE Your Order:
A. Size, like; “08 inches x 24 inches”
B. What side the motor is on using the selected measurements; like “8 inch side”
C. Normally Open or Normally Closed when unpowered:
This means with no power applied, is the damper open?
or closed? Important: When used with a zone control system, you will need to order normally open. When used tied directly to a thermostat or switch, you will want to order normally closed.
D. Rectangular dampers are custom made and not returnable due to size or configuration errors.
Please carefully review your confirming invoice to ensure correct product for your application.
