Electric Confined Space Fans and Blowers (375 Products)

AIR SYSTEMS INTERNATIONAL

Size Price
12"
$1,114.29
12"
$1,230.36
RAMFAN

Hp Color Duct Dia. Material Max. Flow In Free Air Type Speed Amps Price
1/4 hp
Yellow
8"
Polyethylene
862 CFM
Axial
3200 RPM
11.5A
RFQ
1 1/2 hp
Yellow
16"
Chemical Resistant ABS
4459 CFM
Axial
3450 RPM
-
$3,350.69
1/3 hp
Black
8"
Polyethylene
980 CFM
Axial Explosion Proof
3450 RPM
2A
$4,405.26
AIR SYSTEMS INTERNATIONAL

Color Voltage Duct Length Size Type Duct Dia. Hp Max. Flow In Free Air Price
-
220V AC
-
8"
-
-
-
-
$487.50
-
220V AC
25 ft.
8"
-
-
-
-
$533.93
-
220V AC
6 ft.
8"
-
-
-
-
$427.14
Black
-
6 ft.
-
Axial Explosion Proof
8"
-
-
$2,223.93
-
-
-
-
-
-
-
-
RFQ
Red
12V DC
-
-
Axial
8"
1/4 hp
974 CFM
RFQ
-
-
-
-
-
-
-
-
RFQ
-
220V AC
-
12"
-
-
-
-
$766.07
-
12V DC
15 ft.
-
-
-
-
-
RFQ
-
12V DC
25 ft.
-
-
-
-
-
RFQ
ALLEGRO SAFETY

Hp Duct Dia. Max. Flow In Free Air Type Amps Height Blower/fan Speed Frequency Price
1/4 hp
8"
816 CFM
Axial
22A
-
3800 RPM
-
$556.59
1/2 hp
16"
3400 CFM
Axial
7.2A
19"
1725 RPM
50 Hz
$1,663.34
2 hp
16"
5500 CFM
3 Blade
21A
19"
3450 RPM
60 Hz
$2,797.90
1/2 hp
16"
2900 CFM
Axial Explosion Proof
6.3A
19"
1725 RPM
60 Hz
$2,983.24
2 hp
20"
7500 CFM
Axial
21A
22 1/2"
3450 RPM
60 Hz
$2,868.00
1/2 hp
20"
4650 CFM
Axial Explosion Proof
8.2A
22 1/2"
1725 RPM
60 Hz
$3,525.33
1/3 hp
8"
778 CFM
Axial
-
10"
-
-
$630.09
AMERIC

Hp Duct Dia. Max. Flow In Free Air Amps Height Operating Voltage Blower/fan Speed Speed Price
1/4 hp
8"
877 CFM
2.5A
18 1/2"
115V AC
3200 RPM
3000 RPM
$901.76
1 hp
12"
2796 CFM
9A
21"
115V AC
3300 RPM
-
$876.69
1 hp
12"
2492 CFM
4.2A
21"
240V AC
2850 RPM
2850 RPM
$1,091.29
AIR SYSTEMS INTERNATIONAL

Color Frequency Voltage Material Dia. Mounting Type Conductive Material Construction Angle Price
Orange
-
-
Polyethylene
8"
Universal
No
-
$1,063.62
-
50 Hz
230V AC
-
8"
-
-
-
$800.00
-
60 Hz
115V AC
-
8"
-
-
-
$427.14
Red
-
-
-
8"
-
-
-
$455.00
-
-
-
-
-
-
-
90°
$645.36
RAMFAN

Hp Duct Dia. Max. Flow In Free Air Amps Blower/fan Speed Speed Color Material Price
1/3 hp
8"
980 CFM
2.5A
3450 RPM
3450 RPM
Yellow
Polyethylene
$697.15
1/4 hp
8"
862 CFM
11.5A
-
-
Yellow
Polyethylene
$939.89
1/3 hp
8"
980 CFM
2.7A
-
-
Yellow
Polyethylene
$1,001.68
1/3 hp
8"
980 CFM
2.7A
-
-
Yellow
Polyethylene
$818.66
1/3 hp
8"
862 CFM
11.5A
3200 RPM
3200 RPM
Yellow
Polyethylene
$919.82
AIR SYSTEMS INTERNATIONAL

MPN Price
SVBE6AL115
RFQ
SVBE6AL440
RFQ
ALLEGRO SAFETY

Hp Voltage Height Cfm Dia. Air Consumption Frequency Housing Material Price
-
115V AC
-
-
-
-
-
-
RFQ
-
220V AC
-
-
-
-
-
-
RFQ
333/1000 hp
115V AC
18 1/2"
865 CFM
8"
865 CFM
60 Hz
Polyethylene
$340.53
1/3 hp
115V AC
21"
1475 CFM
12"
1475 CFM
60 Hz
Polyethylene
$1,798.20
1 hp
115V AC
21"
2180 CFM
12"
2180 CFM
60 Hz
Polyethylene
$556.10
ALLEGRO SAFETY

Hp Color Material Max. Flow In Free Air Duct Dia. Amps Draw No. Of Blades Height Price
1/4 hp
Orange
Steel
1150 CFM
8"
22A
6
-
$635.00
1/4 hp
Orange
Steel
1685 CFM
12"
22A
3
-
$837.26
1 hp
Black, Yellow, Orange
Polyethylene
3200 CFM
16"
9A
3
22"
$1,192.26
1/2 hp
Orange
-
2929 CFM
-
39A
6
19"
$1,666.59
-
-
-
-
-
-
-
-
$2,921.84
1/2 hp
Orange
Polyethylene
2359 CFM
16"
39A
6
22"
$2,272.53
3/4 hp
Orange
Polyethylene
2849 CFM
16"
4.6-4.8/9.6A
3
22"
$2,851.52
1/2 hp
Orange
Polyethylene
2359 CFM
16"
36A
6
22 1/2"
$2,078.76
3/4 hp
-
Polyethylene
-
-
4.6-4.8/9.6A
3
22 1/2"
$3,674.98
ALLEGRO SAFETY

Grill Finish Max. Ducting Temp. Hp Duct Dia. Material Max. Flow In Free Air Color Type Price
Black Powder Coated
180°F
3/4 hp
8"
Polyethylene
1570 CFM
Orange
Centrifugal
$1,712.85
Zinc Plated
150°F
3/4 hp
8"
Polyethylene
1570 CFM
-
Centrifugal
$1,833.40
ALLEGRO SAFETY

Hp Max. Flow In Free Air Amps Blower/fan Speed Speed Amps Draw Color Duct Dia. Price
1/4 hp
816 CFM
13A
4200 RPM
4200 RPM
13A
Orange
8"
$1,435.64
1/3 hp
831 CFM
3A
3200 RPM
3200 RPM
3A
Orange
8"
$1,342.07
ALLEGRO SAFETY

Hp Max. Flow In Free Air Type Height Amps Draw Amps Blower/fan Speed Operating Voltage Price
1/3 hp
1066 CFM
Centrifugal
20"
6A
6A
1725 RPM
115V AC
$2,148.59
3/4 hp
1570 CFM
Centrifugal
20"
12A
12A
1725 RPM
120/240V AC
$2,484.02
3/4 hp
1570 CFM
Centrifugal Explosion Proof
19"
10.6A
-
-
-
$3,845.80
5 3/4 hp
1390 CFM
-
-
-
-
3000 RPM
-
$2,243.49
3/4 hp
1066 CFM
Centrifugal
20"
6A
6A
-
-
$2,807.49
AIR SYSTEMS INTERNATIONAL

Max. Flow In Free Air Hp Color Duct Dia. Material Mounting Type Elbow Angle Type Price
1395 CFM
1/3 hp
Orange
8"
Steel
Universal
90°
Axial
$1,624.17
-
-
-
-
-
Universal
90°
-
$1,388.21
AIR SYSTEMS INTERNATIONAL

Color Material Construction Included Type Not Included Price
Black, Orange
Polyethylene
Polyethylene
Saddle Vent, Accessories
-
Fan
$845.00
Black, Orange
Polyethylene
Polyethylene
Saddle Vent, Accessories
Explosion Proof Fan
-
$923.93
Black, Orange
Polyethylene
Polyethylene
-
-
-
$923.93
AIR SYSTEMS INTERNATIONAL

Max. Flow In Free Air Hp Color Duct Dia. Material Type Amps Operating Voltage Price
2348 CFM
1 hp
Orange
12"
Polyethylene
Axial
8.3A
115V AC
$1,043.15
2348 CFM
1 hp
Orange
12"
Polyethylene
Axial
8.3A
115V AC
$1,036.22
AIR SYSTEMS INTERNATIONAL

Max. Flow In Free Air Frequency Hp Color Duct Dia. Material Type Housing Material Price
2348 CFM
60 Hz
1 hp
Orange
12"
Polyethylene
Axial
Plastic
$885.53
1956 CFM
50 Hz
1 hp
Orange
12"
Polyethylene
Axial
Plastic
$450.36
AIR SYSTEMS INTERNATIONAL

Frequency Duct Length Hp Color Duct Dia. Type Housing Material Phase Price
60 Hz
15 ft.
1 1/2 hp
Black
12"
Axial Explosion Proof
Plastic
1
$5,042.61
60 Hz
25 ft.
1 1/2 hp
Black
12"
Axial Explosion Proof
Plastic
1
$5,063.78
50 Hz
15 ft.
1 1/2 hp
Black
12"
Axial Explosion Proof
Plastic
-
$4,927.07
50 Hz
25 ft.
1 1/2 hp
Black
12"
Axial Explosion Proof
Plastic
-
$5,063.78
AIR SYSTEMS INTERNATIONAL

Max. Flow In Free Air Frequency Hp Color Duct Dia. Material Type Cord Length Price
2069 CFM
50 Hz
1 1/2 hp
Black
12"
PVC
Axial
10m
$3,884.52
2483 CFM
60 Hz
1 1/2 hp
Black
12"
PVC
Axial
-
$3,884.52
AIR SYSTEMS INTERNATIONAL

Hp Amps Color Duct Dia. Material Max. Flow In Free Air Type Blower/fan Speed Price
1/3 hp
4A
Red
8"
Plastic
974 CFM
Axial
3250 RPM
$619.68
1/3 hp
4A
Red
8"
Plastic
974 CFM
Axial
3250 RPM
$665.80
1/4 hp
19A
Red
8"
Plastic
974 CFM
Axial
3250 RPM
$748.90
1/4 hp
19A
Red
8"
Plastic
974 CFM
Axial
3250 RPM
$811.26
-
-
-
-
-
-
-
-
$380.71
-
-
-
-
-
-
-
-
$501.43
AIR SYSTEMS INTERNATIONAL

Hp Color Max. Flow In Free Air Amps Duct Length Duct Dia. Material Type Price
1/3 hp
Yellow, Orange
870 CFM
3.6A
15 ft.
8"
Steel
Axial
$1,183.34
1/3 hp
Yellow, Orange
858 CFM
3.6A
25 ft.
8"
Steel
Axial
$1,323.17
1/4 hp
Orange
796 CFM
18A
25 ft.
8"
Steel
Axial
$1,353.84
1/6 hp
Orange
-
18A
-
8"
Steel
Axial
$961.07
1/6 hp
Orange
-
18A
-
8"
Steel
Axial
$882.14
1/6 hp
Orange
-
18A
6 ft.
8"
Steel
Axial
$965.71
AIR SYSTEMS INTERNATIONAL

Hp Color Max. Flow In Free Air Amps Speed Frequency Duct Dia. Material Price
1/3 hp
Red
974 CFM
4A
3250 RPM
60 Hz
8"
Plastic
$430.30
1/4 hp
Red
974 CFM
19A
3250 RPM
-
8"
Plastic
$556.62
1/3 hp
Orange
830 CFM
3A
1450 RPM
50 Hz
8"
Plastic
$533.13
AIR SYSTEMS INTERNATIONAL

Hp Material Max. Flow In Free Air Height Blower/fan Speed Power Source Color Duct Dia. Price
3/4 hp
Aluminum, Polyethylene, Steel
1570 CFM
27"
1725 RPM
Electric
Gray
8"
$3,606.28
4 hp
Steel
3000 CFM
19"
3000 RPM
Air Driven
Gray
8"
$4,140.30
3/4 hp
-
-
-
-
-
Gray
-
$5,153.57
AIR SYSTEMS INTERNATIONAL

Hp Material Max. Flow In Free Air Fuel Type Power Source Amps Height Frequency Price
3/4 hp
Polyethylene, Steel
1570 CFM
Electric
Electric
10.8A
27"
60 Hz
$1,874.02
3/4 hp
Polyethylene, Steel
1570 CFM
Electric
Electric
11.5A
27"
60 Hz
$2,820.35
4 hp
Steel
3000 CFM
Gasoline
Gasoline
-
-
-
$1,995.21
1/2 hp
Polyethylene, Steel
1390 CFM
Electric
Electric
8A
21"
-
$1,589.78
3/4 hp
-
-
-
-
-
-
50 Hz
$2,131.07
-
-
-
-
-
-
-
-
RFQ
4 hp
Steel
-
Gasoline
-
-
-
-
$2,223.93
AIR SYSTEMS INTERNATIONAL

Max. Flow In Free Air Cord Length Hp Color Duct Dia. Material Type Amps Price
974 CFM
25 ft.
1/3 hp
Black
8"
Plastic
Axial Explosion Proof
4A
$3,418.04
974 CFM
25 ft.
1/3 hp
Black
8"
Plastic
Axial Explosion Proof
4A
$3,474.24
-
10 ft.
1/3 hp
Black
8"
-
Axial Explosion Proof
4A
$2,832.14
-
10 ft.
1/3 hp
Black
8"
-
Axial Explosion Proof
4A
$2,901.79
AIR SYSTEMS INTERNATIONAL

Duct Dia. Duct Length Hp Color Material Max. Flow In Free Air Housing Material Type Price
8"
15 ft.
1/3 hp
Black
Plastic
987 CFM
Plastic
Axial Explosion Proof
$3,033.91
8"
25 ft.
1/3 hp
Black
Plastic
987 CFM
Plastic
Axial Explosion Proof
$3,331.69
15"
15 ft.
1/3 hp
Black
-
-
Plastic
Axial Explosion Proof
$2,316.79
8"
-
1/3 hp
Black
-
-
Plastic
-
$2,409.64
8"
6 ft.
1/3 hp
Black
-
-
Plastic
Axial Explosion Proof
$2,330.71
AIR SYSTEMS INTERNATIONAL

Max. Flow In Free Air Operating Voltage Blower/fan Speed Hp Color Duct Dia. Material Amps Price
987 CFM
115V AC
3250 RPM
1/3 hp
Black
8"
Plastic
4A
$2,370.29
823 CFM
240V AC
2875 RPM
1/3 hp
Black
8"
Plastic
4A
$2,329.09
AIR SYSTEMS INTERNATIONAL

Hp Material Max. Flow In Free Air Amps Height Blower/fan Speed Color Duct Dia. Price
1/2 hp
Polyethylene, Steel
1390 CFM
7A
27"
1725 RPM
Gray
8"
$2,396.09
3/4 hp
Polyethylene, Steel
1570 CFM
11A
37"
1725 RPM
Gray
8"
$2,573.22
3/4 hp
Polyethylene, Steel
1570 CFM
11A
37"
-
Gray
8"
$3,635.31
4 hp
Steel
3000 CFM
-
-
3000 RPM
Gray
8"
$2,700.05
-
-
-
-
-
-
-
-
$2,873.93
AIR SYSTEMS INTERNATIONAL

Hp Type Amps Duct Dia. Color Material Max. Flow In Free Air Height Price
1/3 hp
Axial
4A
8"
Red
Plastic
974 CFM
13"
$1,118.52
1/4 hp
Axial
19A
8"
Red
Plastic
974 CFM
13"
$1,209.73
1/3 hp
Axial
4A
8"
Red
Plastic
974 CFM
13"
$1,108.46
1/4 hp
Axial
19A
8"
Red
Plastic
974 CFM
13"
$1,230.87
-
Can Fan
-
8"
-
-
-
-
$830.00
AIR SYSTEMS INTERNATIONAL

Hp Color Duct Dia. Material Max. Flow In Free Air Amps Height Blower/fan Speed Price
1 hp
Red
8"
Plastic
848 CFM
19A
13"
3250 RPM
$2,794.05
-
-
-
-
-
-
-
-
$1,825.00
FASCO

Amps Frequency Speed Voltage Bearing Type Blower Outlet Shape Blower Outlet Flange Insulation Class Price
0.95/0.49A
50/60 Hz
3000 RPM
115/208-230V
Ball
Round
No
Class B
$430.00
2.9A
60 Hz
1600 RPM
115V
Sleeve
Rectangle
Yes
Class B
$729.66
1.3A
60 Hz
2800 RPM
115V
Sleeve
Rectangle
No
Class B
$711.43
3.55/2.21A
50/60 Hz
1545 RPM
115V
Sleeve
Rectangle
Yes
Class A
$778.20
FASCO

Airflow @ 0.400 In Sp Amps Frequency Speed Blower Outlet Flange Overall Width Overall Height No. Of Speed Price
165 CFM
2A
60 Hz
1500 RPM
No
10 5/16"
11 1/8"
3
$522.03
140 CFM
1.3A
50/60 Hz
3200 RPM
Yes
7 1/8"
7 5/8"
1
$455.50
RAMFAN

Color Duct Dia. Material Max. Flow In Free Air Hp Amps Height Speed Price
Yellow
12"
Polyethylene
2420 CFM
3/4 hp
8A
20"
3450 RPM
$1,049.17
Yellow
8"
UV Resistant Polyethylene
819 CFM
-
1.3A
14"
2850 RPM
RFQ
Yellow
8"
Polyethylene
819 CFM
1/4 hp
1.3A
14"
2850 RPM
$1,107.90
Black
8"
Polyethylene
819 CFM
1/4 hp
1.2A
14"
2850 RPM
$4,388.48
Black
8"
Polyethylene
819 CFM
1/4 hp
1.2A
14"
2850 RPM
RFQ
Yellow
12"
Polyethylene
2873 CFM
5/8 hp
5A
20"
2850 RPM
$1,124.90
AMERIC

Duct Dia. Amps Operating Voltage Blower/fan Speed Voltage Hp Color Material Price
20"
13A
240V AC
3300 RPM
230V AC
5 hp
Blue
Polyethylene
$4,404.94
20"
6.5A
440V AC
3495 RPM
440V AC
5 hp
Blue
Polyethylene
$4,574.06
RAMFAN

Color Type Amps Operating Voltage Material Properties Hp Duct Dia. Material Price
Yellow
Axial
2.7A
120/240V AC
UV Resistant
1/3 hp
8"
Polyethylene
$1,824.63
Black
Axial Explosion Proof
2A
115V AC
UV Resistant Anti Static
1/3 hp
8"
Polyethylene
$5,425.74
RAMFAN

Color Type Watts Material Amps Height Voltage Depth Price
Yellow
Blower Fan
230 W
Polyethylene
2A
14"
115V
12"
RFQ
Yellow
Blower With Canister
230 W
Polyethylene
2A
14"
115V
12"
RFQ
-
-
-
-
-
-
-
-
$709.49
Black
Intrinsically Safe Blower
250 W
Polyethylene
2A
14"
115V
12"
$2,453.94
RAMFAN

MPN Price
ED7015-MED
RFQ
ED9015-MED
$1,421.71
EF7015-MEDXX
RFQ
RAMFAN

Hp Color Material Type Amps Cord Length Housing Material Voltage Price
-
-
-
-
-
-
-
-
$4,102.40
-
-
-
-
-
-
-
-
$4,102.40
-
-
-
-
-
-
-
-
$4,021.03
-
-
-
-
-
-
-
-
$4,021.03
3/4 hp
Black
Aluminum
Intrinsically Safe Blower
7.2A
25 ft.
ABS
115/230V
RFQ
-
-
-
-
-
-
-
-
$3,039.09
-
-
-
-
-
-
-
-
RFQ
RAMFAN

MPN Price
EL-55ZAC
RFQ
EL-55ZDC
RFQ
EL5518D
RFQ
EL-6525ZAC
RFQ
EL-6525ZDC
RFQ
RAMFAN

MPN Price
GD8111
$674.74
GE8111
RFQ
RAMFAN

MPN Price
GH8112
RFQ
GH8112-FLD
RFQ
RAMFAN

MPN Price
EL8111
RFQ
EL8111-BSP
$565.03
ALLEGRO SAFETY

MPN Price
9815-EF
$664.66
ALLEGRO SAFETY

MPN Price
9825-EF
$6,514.76
RAMFAN

MPN Price
EJ4002
RFQ
RAMFAN

MPN Price
EL5500
RFQ
RAMFAN

MPN Price
EL6525
RFQ
RAMFAN

MPN Price
GH8115
RFQ
1 2 ... 2 3

Description

Electric confined space fans and blowers circulate a continuous supply of fresh air or to push out fumes. Raptor Supplies offers a huge array of confined space blowers / fans / ventilators and jet fans from brands like Allegro, Rafman, Americ, Air Systems International and Ecko. Americ confined space blowers and air exhausters are designed for applications requiring larger amounts of air output; ideal for use in Class 1 hazardous locations like pump rooms. These intrinsically safe blowers are powered by 1.5 HP pneumatic motors capable of providing a max airflow of 2063 CFM. They are enclosed in a dual-wall shell for absorbing impact. Allegro explosion-proof, confined space axial blowers are used in closed spaces with negligible ventilation. These blowers feature powerful & energy-efficient motors capable of producing a maximum airflow of 1636 CFM at 3320 RPM. They are ideal for the removal of smoke and harmful fumes with both positive & negative ventilation and are equipped with an integrated handle for portability. Electric confined space fans and blowers also include manhole entry kits.

Working Mechanism

  • Select a confined or limited space that originally has toxic gases.
  • Generally, the tanks or any confined space is ventilated from the bottom and through an opening on the top.
  • Attach the vent ducts to the fans or blowers and position them on a firm footing having minimum vibrations.
  • Use a pull switch or simply power on to activate a ventilator.
  • Eliminate the concentration of the present toxic gas below the appropriate atmospheric exposure level.

Features

Americ confined space blowers and air exhausters:

  • They are ideal for nonexplosive environments with greater air exchange.
  • They feature up to 5-hp motors to provide a max speed of 3495 rpm.
  • These electric confined space fans and blowers have a built-in handle for enhanced portability.
  • They offer a max flow rate of 9968 cfm and are available in voltage ratings of 115, 230 and 440V.

Air Systems International Confined Space Fan Kits:

  • These explosion-proof axial fans have polyethylene construction for lightweight and corrosion resistance.
  • They provide a free airflow rate of up to 2483 CFM and come included with a 10 feet cord and 25 feet conductive duct (on selected models), allowing easy transit during operation.
  • These OSHA-compliant confined space fans are available in red, black and orange colours.

Allegro AC Plastic Blowers:

  • They feature polyethylene construction for UV and chemical resistance and a steel powder-coated grill for protection against high moisture air.
  • These blowers have flexible ducting that allows passing through tight spaces for maximising accessibility and can be stored inside the canister itself to prevent the chances of damage to the ducting during transportation.
  • Their canisters are equipped with handles for easy portability on the job site, allowing the worker to instantly connect the canister to the blower.
  • These blowers have a quick-connect clipping system that allows the worker to instantly connect the canister to the blower.
  • The brand's lay flat ducting can be used as a supplement to further extend the range of the blower for quick and easy operation.

Americ Confined Space Fans:

  • Americ confined space fans feature dual wall shell design for protecting internal mechanisms & airflow.
  • They allow easy stacking over to save space in storage & work areas and are equipped with built-in handles for easy transit.

Allegro explosion proof blower fan:

  • They are used in closed spaces with negligible ventilation
  • These blowers feature powerful & energy-efficient motors capable of producing a maximum airflow of 1636 CFM at 3320 RPM.
  • They are ideal to remove smoke and harmful fumes with both positive & negative ventilation and are equipped with an integrated handle for portability.
  • These electric confined space fans and blowers also include manhole entry kits.

Frequently Asked Questions

Q. How often should air be tested in a confined space?

A. To completely assess intoxicants or dangers, according to OSHA's standards, testing of the confined spaces should be performed at 4-foot intervals.

Q. What types of ventilation can be used in confined spaces?

A. Forced or exhaust ventilation is suitable for confined spaces. Forced ventilation uses forced & fresh air to ventilate a confined space by displacing and diluting air, whereas exhaust ventilation uses exhaust to continuously remove contaminants at the source point.

Q. How many air changes are required in a confined space?

A. According to the AIHA (American Industrial Hygiene Association), one air change every 3 minutes or 20 complete air changes per hour for a confined space is an acceptable practice. Ventilation of the confined space also depends on the product or material being ventilated from the area.

Q. Are blowers better than fans?

A.

  • Fans are electrical devices, while blowers are mechanical devices.
  • Fans consume less electricity. Blowers relatively intake more power.
  • Fans offer medium airflow depending on the capacity, whereas the blowers deliver better airflow than the fans.

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