AIRTECHZ · SHT axial blower series
Portable Ventilation Blower
Portable axial fans for air supply and exhaust through flexible ducting.
A portable ventilation blower is an axial fan designed for long-distance ventilation and air extraction. It connects to flexible ducting to ventilate a defined work area. Choose a hand-carried unit, a wheeled version for larger sizes, or a floor stand with an adjustable outlet angle.
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Choose the support arrangement
Hand-carried, wheeled and adjustable stand versions
Hand-carried type
A carry handle makes the blower convenient to move between work areas. Fixed support feet provide a base for placing the unit near the ventilation point.
Wheeled mobile type
A wheeled frame makes larger blowers easier to move to the required location, particularly in the 20-inch and 24-inch sizes.
Adjustable floor stand
The stand supports the blower at an adjustable angle. Direct the outlet towards the required area and secure the selected angle with the adjustment knob.
Air supply and extraction
Connect flexible ducting to reach the work area
The blower can connect to flexible ventilation ducting for air delivery or extraction. This allows the fan to be positioned away from the point where ventilation is needed.
Choose the duct diameter to match the blower connection. Duct length, bends and restrictions affect the airflow delivered at the end of the duct.
For selection, send the required airflow, duct diameter and length, number of bends, and whether the system will supply air or extract it. We will review the proposed arrangement with you.
Product construction
Steel housing, aluminium blades and practical handling details
Aluminium blades
The blade and air outlet use a CAD-optimised design for ducted airflow and pressure.
Housing and grille
A steel housing encloses the fan assembly. The grille covers the opening, with a flared rim around the inlet.
Carry handle
The ABS handle provides a grip for carrying the blower. Handle and switch arrangements vary by version.
Rubber feet
Rubber feet are fitted to the fixed supports. The adjustable stand and wheeled frame provide alternative support arrangements.
SHT standard models
Portable ventilation blower technical data
Available nominal sizes are 8, 10, 12, 14, 16, 18, 20 and 24 inches, corresponding to 200, 250, 300, 350, 400, 450, 500 and 600 mm. Technical ratings for the six standard models from 200 to 450 mm are listed below.
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| Model | Diameter mm / inch | Voltage options V | Phase options | Frequency Hz | Power W | Speed r/min | Airflow m³/min | Total pressure Pa | Noise dB(A) |
|---|---|---|---|---|---|---|---|---|---|
| SHT-20 | 200 / 8 | 110 / 220 | 1 | 50 / 60 | 230 | 2,800 / 3,300 | 25 | 245 | 63 |
| SHT-25 | 250 / 10 | 110 / 220 | 1 | 50 / 60 | 320 | 2,800 / 3,300 | 43 | 294 | 68 |
| SHT-30 | 300 / 12 | 110 / 220 | 1 | 50 / 60 | 520 | 2,800 / 3,300 | 65 | 373 | 71 |
| SHT-35 | 350 / 14 | 220 / 380 | 1 / 3 | 50 / 60 | 750 | 2,800 / 3,300 | 82 | 598 | 76 |
| SHT-40 | 400 / 16 | 220 / 380 | 1 / 3 | 50 / 60 | 1,100 | 2,800 / 3,300 | 96 | 700 | 80 |
| SHT-45 | 450 / 18 | 220 / 380 | 1 / 3 | 50 | 1,500 | 2,800 | 162 | 972 | 83 |
Slash-separated entries show available electrical or frequency options, not a switchable speed setting. Confirm voltage, phase and frequency together when ordering. SHT-45 is listed at 50 Hz only. Airflow and total pressure are separate listed ratings; the required operating point should be checked against the proposed duct arrangement.
The listed airflow range of 25–162 m³/min is equivalent to 1,500–9,720 m³/h. For the 500 mm / 20-inch and 600 mm / 24-inch sizes, request the corresponding model data and support configuration.
Finish options
Standard and custom colours
Orange and black are the standard colour options. Other colours, including blue and yellow, can be customised. Specify the colour with the model, size and support arrangement.
Packing and shipment
One blower per carton
Use the carton dimensions and weights below when preparing a shipment. These figures apply to the listed standard SHT models; confirm the packing for wheeled frames, adjustable stands and special configurations separately.
On smaller screens, scroll sideways to view every column.
| Model | Net weight kg | Gross weight kg | Carton L × W × H cm | 20GP units | 40GP units | 40HQ units |
|---|---|---|---|---|---|---|
| SHT-20 | 7.0 | 7.5 | 33 × 26.5 × 35 | 900 | 1,880 | 2,210 |
| SHT-25 | 8.3 | 8.8 | 38 × 30.5 × 35 | 680 | 1,420 | 1,660 |
| SHT-30 | 10.5 | 11.3 | 42 × 35.5 × 43 | 430 | 860 | 1,050 |
| SHT-35 | 18.0 | 19.0 | 53 × 43 × 43 | 280 | 560 | 680 |
| SHT-40 | 22.0 | 24.0 | 52 × 51 × 51 | 200 | 420 | 490 |
| SHT-45 | 27.0 | 29.0 | 59 × 55 × 49.5 | 170 | 350 | 420 |
Container quantities are packing references. Confirm the final loading plan for mixed models, revised packaging or additional ducting.
Typical uses
Ventilation for maintenance and repair work
Underground work
Direct air through flexible ducting to an underground work area where the blower cannot be placed immediately beside the ventilation point.
Telecommunications
Use portable equipment for temporary ventilation during telecommunications installation and maintenance tasks.
Tunnel repair
Position the blower and ducting to serve the repair area, choosing the support arrangement to suit the available space and movement between work locations.
Portable ventilation blower questions
Is this an axial blower?
Yes. The SHT portable ventilation blower uses an axial fan inside a cylindrical steel housing and can connect to flexible ventilation ducting.
Which sizes are available?
The range includes 8, 10, 12, 14, 16, 18, 20 and 24-inch sizes, equivalent to 200–600 mm nominal diameters. The technical table covers the six standard models from SHT-20 to SHT-45. Request individual data for 20 and 24-inch versions.
How long can the ventilation duct be?
The suitable duct length depends on the blower model, required airflow, duct diameter, bends and restrictions. Send the proposed duct route so the arrangement can be reviewed; a single maximum distance does not apply to every model.
Can the airflow direction be adjusted?
The floor stand version allows the blower angle to be adjusted towards the required direction. A fixed-foot unit and a wheeled frame are also available.
Can I order a different voltage or colour?
Confirm the voltage and phase options in the technical table for the selected model. A 36 V marine version is also available; its supply type must be specified. Standard colours are orange and black, with blue, yellow and other colours available to order.
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Request a portable blower quotation
Send the diameter or model, voltage, phase and frequency, quantity, preferred support type and colour. For ducted ventilation, include the duct diameter, length and proposed route. We will confirm the configuration, packing and delivery details.
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