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.

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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.

ModelSizeMax airflowm³/hMax static pressurePaPowerWNoisedB(A)SpeedrpmVoltageV
LWDA-100 (4")S-MWN-04 LWDA-100 (4")S-MWN-04AC Ø100 mm 605 see curve 41 49 2,900 220-240 Details
LWDA-100 (4")U-MWN-03 LWDA-100 (4")U-MWN-03AC Ø100 mm 410 see curve 41 51 3,350 110-120 Details
LWDA-100S-PWN-15 LWDA-100S-PWN-15AC Ø100 mm 319 185 40 25 2,550 230 Details
LWDE-100 (4")S-MWN-04 LWDE-100 (4")S-MWN-04EC Ø100 mm 697 see curve 35 51 3,350 220-240 Details
LWDE-100 (4")U-MWN-03 LWDE-100 (4")U-MWN-03EC Ø100 mm 410 see curve 35 51 3,350 110-120 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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