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Ultra Silent Duct Fans

Duct fans for noise-sensitive spaces, with optimised blade profiles and sound-attenuating casings. Final selection is confirmed at the duty point (airflow / static pressure / voltage / control mode) and by project verification.

Filter by duty point2 models match · series LWDA355
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Filters use nameplate maximum values (max airflow at zero static pressure, max static pressure at zero airflow). Check the actual operating point on the performance curve of each model.

ViewData tableImage grid
ModelSizeMax airflowm³/hMax static pressurePaPowerWNoisedB(A)SpeedrpmVoltageV
LWDA-355 (14")S-MWN-04 LWDA-355 (14")S-MWN-04AC Ø355 mm 6,450 see curve 903 68 2,900 220-240 Details
LWDA-355 (14")U-MWN-03 LWDA-355 (14")U-MWN-03AC Ø355 mm 2,130 see curve 260 63 1,720 110-120 Details
Certifications for this product line
FCC ×2CE-LVD ×2CE-EMC
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Ningbo Longwell Electric Technology Co., Ltd. · No. 100 Henan Road, Ditang, Yuyao, Ningbo, Chinasales@longwellfans.com · WhatsApp +86 183 5827 4663 · Mon–Fri 8:30–17:30 (UTC+8), reply within 1 business dayHow to order · Privacy notice
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