Wall fin enclosure is used to provide an esthetically appealing covering for the heating element while improving convection for increased performance. Sigma offers a wide range of wallfin enclosure styles to satisfy any architectural requirement. Styles include standard, freestanding, slim and security. Enclosures are available in a variety of materials and finishes. They also come with optional access doors, dampers, tamperproof dampers and more. Sigma’s wallfin enclosures are designed for durability, ease of installation and minimal maintenance.