Multi-Pitch™ adjustable roof jacks are ideal for the installation of all major brands of residential ducted down draft coolers. Rails are pre-installed to support an optional Max-Aire™ barometric damper. Roof jacks are flanged and adjustable for flat roofs and for roofs pitched up to 6/12. 3000 to 4500 CFM jacks have 17¾” discharge opening. 5500-7000 CFM jacks have a 19¾” discharge opening.
Caution: Roof jacks are intended for use as air distribution plenums only and not as supports for coolers. Use cooler legs to support cooler weight.