ThermoFlo 4inx25' Insulated Ducting
$43.16 $53.95
ThermoFlo's SRB Series is industrial quality insulated ducting manufactured tough for consumers' and installers' peace of mind. Consisting of three-ply polyester laminate, fiberglass reinforced scrim, and a galvanized spring steel wire—all wrapped with fiberglass insulation—it provides an outstanding combination of strength and tear resistance.