Frost Fighter Thermoplastic Heat Supply Duct for Portable Indirect Heaters - Extreme Temp Range, UV & Mold Resist, Universal Fit, -65°F to 350°F Size:16" x 16-Ft Thermoplastic Duct What is a float switch PF648-68-85

Frost Fighter Thermoplastic Heat Supply Duct for Portable Indirect Heaters Extreme Temp Range, UV & Mold Resist, Universal Fit, 65°F to 350°F Size:16" x 16 Ft Thermoplastic Duct What is a float switch PF648 68 85 What is a float switch bracket used for Whether you're a professional firefighter or in need of a dependable tool for land management and general use Feature Frost Fighter Thermoplastic Standard PVC Duct Canvas Fabric Duct Max Temperature 350°F 120 150°F <200°F Min Temperature 65°F 10°F 20°F UV Resistance Yes (stabilized) Moderate No Mold Resistance Yes (inhibitors) Limited No Service Life 10 25 years 3 10 years <5 10 years Advanced Material Engineering for Maximum Durability With a 10 25 year service life