Kozy Kollar


The Kozy Kollar is easily the safest and most efficient roof flashing kit on the market. Radon mitigators all across the country are using Kozy Kollars for their radon fan installations. Look no further as WRD sells the Kozy Kollar in 3 inch and 4 inch sizes.

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  • Kozy Kollar is perfect for radon mitigation systems and at WRD, we sell our Kozy Kollars in 3” and 4” sizes.
  • Easily installed from inside the building by one person in 10 minutes.
  • Allowable Roof materials for Kozy Kollars: three tab conventional shingles, architectural shingle, metal roof with solid substrate, and rolled roofing with solid substrate.
  • Kozy Kollars are designed for roofs that are flat to 14/12 pitch.
  • The Kozy Kollar Forms a weather-tight seal on four sides, eliminating the problems caused by wind, rain, or snow.
  • Install in any weather, even winter.Kozy Kollar Roof installs




Additional information

Weight 6 lbs
Dimensions 14 × 10 × 3 in

3" Kozy Kollar, 4" Kozy Kollar


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