Master Flow® Snap‑on Rails Specs

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      Cost Effective icon

      Cost Effective

      Bag of six can connect three register boxes
      Versatile icon

      versatile

      Also make great duct hangers
      Easy icon

      easy

      24-in. length makes it easy to suspend boot between joists

      Where to buy

      Find a GAF distributor near you.

      Find a contractor

      Find a GAF certified contractor near you.