FM 250 – Helios – Flexible Sleeve
Flexible connector for reducing vibration transmission between fans and ducting.
Designed to be used with matching flanges FR (accessory) run on fan spigots.
Supplied in pairs with worm screw clamping bands. Available from 100mm to 710mm.
Product PDF:
VDD 400/6 EX - Helios - Mixed Flow Roof Fan - Vertical Discharge
139345 - DVA 190 E2P 31 - Roof fan vertical metal - Ruck
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MTP 30 - 143289 - 3 - step potentiometer 10 kO - Ruck
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G 250 - Helios - Fixed Grille
145085 - DVNI 225 E2 30 - Roof fan insulated vertical - Ruck
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FDS 250 - Helios - Purlin Box (with hinge mechanism)
VFD-T 5A IP54 (3-PH) - Variable Frequency Inverter - Soler & Palau
PA-10 - Electronic Speed Controller - Helios
VR 250 - Helios - Extension Flanged Casing
MTP 50 - 153133 - PWM control - Ruck
149202 - DVA 250 ECP 41 - Roof fan vertical with EC motor - Ruck
WDS 250/315 - Helios - Soaker Sheet
FM 250 - Helios - Flexible Sleeve 

