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Flange-Mounted Drop-In Impellers
April 2008
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New flange-mounted backward-curved impellers provide optimal airflow and substantially lower installed cost for OEM customers. The Ecofit-brand impellers are suited for cleanrooms (fan/filter units), fume hoods for factories, ventilation hoods for commercial kitchens, and in HVAC systems. The new impellers are attached to a unique flange with a built-in air inlet. The flange allows the fan to be installed quickly and securely with just four screws, cutting installation time from minutes to seconds and eliminating unnecessary parts and materials. The built-in inlet is sized to the impeller and factory-installed to prevent airflow loss. This ensures the best possible airflow in any application. At 60 Hz, airflows range from 255 up to 942 cfm and the maximum static pressures from 1.20 up to 3.2 in. of water, in temperatures ranging from –4° to 158°F. Available in nine UL-listed models, the impellers’ standard features include IP44 protection, UL94 V–O polyamide or galvanized-steel impellers, G2.5 balancing, Class F winding, and thermal protection. Finger guards are built in as an option.

Rosenberg USA


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