True Dual SMTS 2-Stage

Stainless Steel Heaters Resist Wet, Humid and Corrosive Environments

2-stage tube heater for the harsh environment application.

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Harsh Environment 2-Stage Radiant Heater

Two-stage operation with both gas and air modulated for high- and low-heat

16 gauge 304 stainless-steel combustion tube and heat exchangers

Stainless-steel reflectors, tube clamps, and burner box

Blower fully enclosed

Simple chain mounting

CSA International Design Certified to ANSI/CGA Standards

Mill finish reflectors

  • 91.7% reflectional efficiency (shape)

Rotatable reflector arrangements from 0° to 45°

  • Each reflector rotates independently

Burner fully assembled and tested – ready to hang

Factory installed wave turbulator for high efficiency

Safe, reliable operation

  • Durable direct spark ignition
  • 100% safety shut-off
  • Pre and Post-purge cycle for safety
  • System validation light


  • Recessed Ceiling Kit
  • Side Reflector
  • 90° Elbow with reflector
  • “U”-Bend with reflector
  • Common Vent Couplers
  • Inlet and Exhaust Kits

Manifold Operating Pressure 
Natural Gas and LP/Propane: 5 inches WC

Minimum Inlet Pressure 
Natural Gas: 7 inches WC LP/Propane: 11 inches WC

Maximum Inlet Pressure 
Natural Gas and LP/Propane: 14 inches WC1/2 inch FPT Gas Inlet

Electrical Rating 
120 VAC – 60 Hz – 1 Phase1.30 max. amp. draw at 138 cfm/free air

10 year limited warranty on Burner Core
5 year limited warranty on All Combustion and Heat Exchanger tubes
1 year limited warranty on All Burner Controls