900 CFM Island Range Hoods

Island range hoods typically require higher CFM than wall-mount hoods because they lack surrounding cabinetry to contain airflow. A general rule is 1 CFM per 100 BTU for gas ranges, and at least 100 CFM per linear foot of cooktop width. For most residential islands, 600–900 CFM covers 30"–48" cooktops, while oversized setups may need 1,000+ CFM.

A 900 CFM island range hood typically requires a round duct of at least 8–10 inches in diameter, or an equivalent rectangular duct. Using an undersized duct creates back pressure, reduces efficiency, and increases noise. Always consult your HVAC contractor or insert manufacturer's guidelines, as duct length, bends, and transitions also affect the required duct size.

Custom Metal Home fabricates island range hood shells in stainless steel, zinc, copper, brass, darkened steel, and powder-coated steel. Each material is available in multiple hand-finished surface treatments including brushed, mirror, hammered, and light, medium, or dark patina — allowing you to match virtually any kitchen design aesthetic.

Custom Metal Home fabricates the decorative range hood shell or cover only. The ventilation liner or insert — including the blower rated at your desired CFM — is specified by your HVAC contractor or insert manufacturer. Our shells are designed to fit virtually any third-party commercial liner, including those from Best, Broan, Vent-A-Hood, Zephyr, Faber, and Sirius.

Custom fabrication typically takes 4 to 8 weeks from order confirmation. Before fabrication begins, you will receive detailed computer drawings for approval. Lead time may vary based on material availability, finish complexity, and order volume. Contact us at 888-501-3147 for current lead time estimates when planning your kitchen project timeline.

Yes. Custom Metal Home specializes in oversized island range hoods up to 60 inches wide and beyond. Because every hood is made-to-order to your exact kitchen dimensions, there are no standard size limitations. Simply provide your required width, height, and depth, and we will fabricate a shell to fit your specific island cooktop and ceiling height.