Built for the pros, the HandiFoam FR (HFO) is designed to fill and insulate large voids and surfaces. HandiFoam's excellent adhesion properties create a continuous air barrier which completes the building envelope, resulting in improved indoor air quality and lower heating and cooling costs. Designed to be used with the Handi-Gun and the patented ColorWise Temperature Warning nozzles to effectively seal and insulate projects of all sizes. The ColorWise Temperature Warning nozzles change from clear to blue as a visual indication that the foam is too cold and should not be dispensed until properly conditioned. To avoid off-ratio foam and yield-loss, properly condition the chemical before spraying. This product is formulated utilizing an HFO blowing agent which is part of HandiFoam's ongoing commitment to developing foam chemistries with lower global warming impact and enhanced product performance.HandiFoam is an industry-leading brand that delivers low-pressure one- and two-component polyurethane foam sealants, adhesives, pour-in-place and spray foams. HandiFoam is built on the foundation of innovations that improve. We are committed to developing products, exclusive technologies that improve the overall product performance, safety, and experience for our customers.