• Class I, 1.75 lb. density, closed cell foam
• Cost effective refill system; no container disposal problems
• Ideal for small and medium jobs
• Complimentary addition to a big spray foam trailer rig
• Chemical ratio precisely controlled; no manual calibration needed
3M offers SFI 175 which a 1.75 per cubic ft density closed cell spray foam insulation. The SFI 175 is available in convenient refillable cylinders. 3M also offers the only autocalibrator for refillables.