Cross Flow Fans
Browse by series
| Model | Size | Max airflowm³/h | Max static pressurePa | PowerW | NoisedB(A) | Speedrpm | VoltageV | ||
|---|---|---|---|---|---|---|---|---|---|
 |
LWCA-30920SN-06AC | Ø30 mm | 238 | 16 | 16 | 32 | 2,200 | 230 | Details |
 |
LWCA-30986SN-06AC | Ø30 mm | 255 | 17 | 16 | 33 | 2,200 | 230 | Details |
 |
LWCA-401055SN-06AC | Ø40 mm | 311 | 25 | 25 | 38 | 2,200 | 230 | Details |
 |
LWCA-40150SN-07AC | Ø40 mm | 50 | 16 | 11 | 29 | 2,400 | 230 | Details |
 |
LWCA-40150UN-06AC | Ø40 mm | 50 | 16 | 10 | 29 | 2,400 | 115 | Details |
 |
LWCA-40190SN-07AC | Ø40 mm | 61 | 18 | 12 | 30 | 2,400 | 230 | Details |
 |
LWCA-40190UN-06AC | Ø40 mm | 61 | 18 | 11 | 30 | 2,400 | 115 | Details |
 |
LWCA-40250SN-07AC | Ø40 mm | 77 | 19 | 12 | 30 | 2,400 | 230 | Details |
 |
LWCA-40250UN-06AC | Ø40 mm | 77 | 19 | 12 | 30 | 2,400 | 115 | Details |
 |
LWCA-40290SN-07AC | Ø40 mm | 93 | 20 | 12 | 30 | 2,400 | 230 | Details |
 |
LWCA-40290UN-06AC | Ø40 mm | 93 | 20 | 13 | 30 | 2,400 | 115 | Details |
 |
LWCA-40350SN-07AC | Ø40 mm | 108 | 21 | 13 | 31 | 2,400 | 230 | Details |
 |
LWCA-40350UN-06AC | Ø40 mm | 108 | 21 | 16 | 31 | 2,400 | 115 | Details |
 |
LWCA-40420SN-07AC | Ø40 mm | 130 | 22 | 14 | 32 | 2,400 | 230 | Details |
 |
LWCA-40420UN-06AC | Ø40 mm | 130 | 22 | 17 | 32 | 2,400 | 115 | Details |
 |
LWCA-40530SN-06AC | Ø40 mm | 156 | 23 | 17 | 34 | 2,200 | 230 | Details |
 |
LWCA-40610SN-06AC | Ø40 mm | 180 | 23 | 19 | 35 | 2,200 | 230 | Details |
 |
LWCA-40700SN-06AC | Ø40 mm | 207 | 23 | 20 | 37 | 2,200 | 230 | Details |
 |
LWCA-40800SN-06AC | Ø40 mm | 236 | 24 | 22 | 37 | 2,200 | 230 | Details |
 |
LWCA-40854SN-06AC | Ø40 mm | 252 | 24 | 23 | 37 | 2,200 | 230 | Details |
 |
LWCA-4090SN-07AC | Ø40 mm | 30 | 15 | 10 | 29 | 2,400 | 230 | Details |
 |
LWCA-4090UN-06AC | Ø40 mm | 30 | 15 | 9 | 29 | 2,400 | 115 | Details |
 |
LWCA-40920SN-06AC | Ø40 mm | 272 | 24 | 25 | 38 | 2,200 | 230 | Details |
 |
LWCA-43150SN-07AC | Ø43 mm | 61 | 16 | 15 | 38 | 2,500 | 230 | Details |
 |
LWCA-43150UN-06AC | Ø43 mm | 72 | 22 | 17 | 38 | 3,000 | 115 | Details |
 |
LWCA-43190SN-07AC | Ø43 mm | 70 | 14 | 15 | 38 | 2,400 | 230 | Details |
 |
LWCA-43190UN-06AC | Ø43 mm | 86 | 22 | 18 | 39 | 2,900 | 115 | Details |
 |
LWCA-43250SN-07AC | Ø43 mm | 90 | 15 | 19 | 38 | 2,500 | 230 | Details |
 |
LWCA-43250UN-06AC | Ø43 mm | 110 | 21 | 22 | 39 | 2,800 | 115 | Details |
 |
LWCA-43290SN-07AC | Ø43 mm | 115 | 11 | 19 | 37 | 2,300 | 230 | Details |
 |
LWCA-43290UN-06AC | Ø43 mm | 135 | 21 | 23 | 40 | 2,800 | 115 | Details |
 |
LWCA-43350SN-07AC | Ø43 mm | 130 | 15 | 21 | 39 | 2,400 | 230 | Details |
 |
LWCA-43350UN-06AC | Ø43 mm | 150 | 19 | 21 | 41 | 2,700 | 115 | Details |
 |
LWCA-43420SN-07AC | Ø43 mm | 163 | 21 | 21 | 40 | 2,300 | 230 | Details |
 |
LWCA-43420UN-06AC | Ø43 mm | 170 | 20 | 22 | 42 | 2,600 | 115 | Details |
 |
LWCA-4390SN-07AC | Ø43 mm | 41 | 18 | 14 | 37 | 2,700 | 230 | Details |
 |
LWCA-4390UN-06AC | Ø43 mm | 48 | 22 | 17 | 37 | 3,000 | 115 | Details |
 |
LWCA-45120SN-06AC | Ø45 mm | 69 | 22 | 16 | 35 | 1,700 | 230 | Details |
 |
LWCA-45120SN-07AC | Ø45 mm | 123 | 26 | 28 | 39 | 1,600 | 230 | Details |
 |
LWCA-45180SN-06AC | Ø45 mm | 103 | 23 | 18 | 35 | 1,700 | 230 | Details |
Cross Flow Fans — selection guide
The Cross Flow Fans category currently lists 318 models, impellers Ø30–150 mm, maximum airflow 23–4,000 m³/h, static pressure up to 320 Pa, on DC / AC / EC motors, across 236 series. Common voltages: 230 V, 24 V, 12 V, 115 V.
Cross flow (tangential) fans use a long cylindrical impeller that draws air in across its length and discharges it as an even, wide air curtain. Low noise, a slim envelope and a discharge that matches the width of the appliance make them the standard fan for indoor air-conditioning units, air curtains, elevators and linear air supply in appliances and electronics.
How to select a Cross Flow Fan
- Specify the impeller length and diameter from the housing you have — the discharge width must match the outlet.
- Cross flow fans develop low static pressure (typically below 100 Pa); design the air path with minimal resistance.
- Motor type follows the appliance: AC for mains-powered units, DC (12 / 24 / 48 V) for appliances and low-voltage equipment, EC where speed control and feedback are needed.
- Noise is dominated by tip speed — a longer impeller at lower speed is quieter than a short one at high speed for the same airflow.
- Confirm mounting direction and bearing side against the drawing; many lengths are made to order.
Typical applications
- Indoor AC units and fan coil terminals
- Air curtains and door air barriers
- Elevator ventilation
- Fireplaces, ovens and appliances
- Cabinet and battery cooling
Why specify LONGWELL cross flow fans
Every model here is a current production item with structured data — not a catalogue scan. Curves are tested on our own wind-tunnel rigs per AMCA 210 / ISO 5801 methods, drawings and datasheets download directly, CAD is released on request, and a quotation with the duty-point check comes back within one business day. Samples ship in 1–3 days and production batches in 15–30 days from the factory in Ningbo, with ISO 9001 / 14001 / 45001 management systems and ETL, CE and RoHS documentation per product line.
FAQs — Cross Flow Fans
How do I choose the length of a cross flow fan?
Match the impeller length to the discharge opening of your unit; airflow scales almost linearly with length at the same diameter and speed. Use the size buckets in this category or filter by diameter, then compare lengths within the series.
Can cross flow fans work against ducts?
Only against very low resistance. Static pressure capability is typically below 100 Pa, so they are used for free discharge or short, open air paths. For ducted duties choose an inline duct or centrifugal fan.
Are DC and EC cross flow fans speed controllable?
Yes. DC versions are controlled by voltage or PWM, EC versions by 0–10 V / PWM with tacho or fault feedback. AC versions can be supplied with tapped windings for two or three speeds.
What certifications do cross flow fans carry?
The DC cross flow range is ETL listed for North America (control number 5022563, UL 507 / CSA C22.2 No. 113); CE and RoHS documentation is available per model. See the certifications page for the scans.
Can you customise impeller length, shaft or connector?
Yes. Length, bearing side, shaft, lead-out and connector are configured to the appliance; samples ship in 1–3 days for standard lengths, custom lengths on request.