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Dial 78317 Multi-Pitch Roof Jacks

SKU: 179868
   based on 1 Reviews
100% recommend this product

   Available to Ship in 2-3 weeks

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About the Dial 78317

The Dial 78317 18" Multi-Pitch Roof Jack with Damper is a highly-reliable, durable product from Dial. This adjustable roof jack is ideal for the installation of all major brands of residential ducted downdraft coolers. It's made with 28-gauge galvanized sheet metal, and it includes a slide-in "winterizer" damper. It's rails are preinstalled to support an optional Max Aire barometric damper. It's flanged and adjustable for flat roofs and for roofs pitched up to 6/12.

Product Details

Use: Evaporative Cooler
Mpn # 78317
Weight 12.80 lbs.


Rated 5 out of 5 based on 1 reviews

home oner Rated 5 by Steve
  Yes, I recommend this product.
I have used this product on my roof for over 30 years . it is easy to winterize each season . I am looking to get one for my mother in-laws house.
Originally posted on Oct/2016

Questions & Answers


Hi, Thanks for visiting! The Dial Multi-Pitch Roof Jacks come in two different sizes. 18 inch and 20 inch. The 18" (78317) is for 3000-4500 CFM and has a 17-3/4" discharge opening and the 20" (78318) is for 5500-6500 CFM and has a 19-3/4" discharge opening. You can Click here to go to the page where the 20" model is located.