Heatrex's 233 Series EXP explosion-proof unit heater is designed with both safety and versatility in mind. Unique 233 Series features include: Industry's Lowest Ignition Temperature Code Rating : T3C, 320°F (160°C) Dual Over temperature Protection: With both automatic and manual reset over temperature cutouts for additional safety. Nontoxic Propylene Glycol Heat Transfer Fluid Low 70 [...]The post Heatrex 233 Series Explosion-Proof Unit Heater appeared first on Heatrex Blog.