Triangle Tube Smart 40 Phase III Indirect Water Heater, Storage Tank - 36 Gal, Exclusive "Tank-in-Tank" Technology, Lowest Pressure Drop in the Industry
Triangle Tube Smart 30 Phase III Indirect Water Heater, Storage Tank - 28 Gal, Exclusive "Tank-in-Tank" Technology, Lowest Pressure Drop in the Industry
Triangle Tube Smart 50 Phase III Indirect Water Heater, Storage Tank - 46 Gal, Exclusive "Tank-in-Tank" Technology, Lowest Pressure Drop in the Industry
Triangle Tube Smart 60 Phase III Indirect Water Heater, Storage Tank - 56 Gal, Exclusive "Tank-in-Tank" Technology, Lowest Pressure Drop in the Industry
Triangle Tube Smart 80 Phase III Indirect Water Heater, Storage Tank - 70 Gal, Exclusive "Tank-in-Tank" Technology, Lowest Pressure Drop in the Industry
Triangle Tube Smart 120 Phase III Indirect Water Heater, Storage Tank - 119 Gal, Exclusive "Tank-in-Tank" Technology, Lowest Pressure Drop in the Industry
Triangle Tube Smart 100 Phase III Indirect Water Heater, Storage Tank - 95 Gal, Exclusive "Tank-in-Tank" Technology, Lowest Pressure Drop in the Industry
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95% DOP and HEPA/ULPA Filters 
