From Wolf model PW422418 Pro 42 inch wall ventilation hood. With standard features like heat sentry and dual setting halogen lighting, Wolf Pro wall hoods provide the ultimate in ventilation. Pro low-profile wall ventilation hoods all have the classic stainless steel finish. This model comes without a decorative rail but can be ordered (PW422418R). Pro low-profile wall hoods are sold as a shell only. An internal, in-line or remote blower is required. Blower options are a 500CFM internal blower or a 600 CFm in line blower or 600 and 900CFM remote blowers.