Multi-Pitch™ Roof Jack

  • Fits All Residential Down Draft Coolers
  • 28 Gauge Galvanized Sheet Metal
  • Includes Slide-In “Winterizer” Damper
Part # 78317 - 78318 Category:

Product Description

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.

Packaging Information

Part # 78317 Box Carton QTY


Part # 78318 Box Carton QTY


⚠ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

⚠ ADVERTENCIA: Este producto puede exponerle a químicos incluyendo plomo, que es conocido por el Estado de California como causante de cáncer y defectos de nacimiento u otros daños reproductivos. Para mayor información, visite