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Infinity® Air-Stream and Max-Air Grates are a wonderful solution to replace standard 25% perforated panels. They have an unobstructed open area ranging from 55% - 60%. However, it is still possible to controlling air flow by adding Slide Dampers and dampering down to replicate 500-600 cfm or that of a standard 25% perforated panel.
This Kit contains 4 separate galvanized steel sliding dampers that are easy to position to regulate air delivery. The kit is easy to field install and is easily adjustable. Each Slide Damper kit comes with 4 snap in sliding plates, 2 side skirts, and 4 spring clips to retain the side skirts.
