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L.B. White has perfected every aspect of our portable construction heaters design to withstand harsh working environments. This has led to our reputation for reliability, durability and serviceability in the field.
| Model Numbers: | 125 | 170 | 170 Ultra | 170N | 170N Ultra | 400 | 400 Ultra | 400 Ultra DF |
| BTU/H Rating | 70,000-125,000 | 125,000-170,000 | 125,000-170,000v | 125,000-155,000 | 125,000-155,000 | 250,000-400,000 | 250,000-400,000 | 170,000-400,000* |
| Heated Air Output (CFM) | 400 | 550 | 550 | 550 | 550 | 1,050 | 1,050 | 1,050 |
| Fuel Type | LP | LP | LP | NG | NG | LP | LP | LP/NG |
| Fuel Consumption LP Gas min/max (lbs./hr) | 3.2/5.8 | 5.8/7.9 | 5.8/7.9 | – | – | 11.6/18.6 | 11.6/18.6 | 11.6/18.6 |
| Fuel Consumption Natural Gas (cu.ft/hr) | – | – | – | 125/155 | 125/155 | – | – | 170/400 |
| Inlet Gas Pressure LP Gas | 11.0 (in. w.c.) | 11.1 (in. w.c.) | 11.1 (in. w.c.) | – | – | 5.2 PSIG | 5.2 PSIG | 1.5 PSIG |
| Inlet Gas Pressure Natural Gas min/max | – | – | – | 7/13.5 (in. w.c.) | 7/13.5 (in. w.c.) | – | – | 1.5 PSIG |
| Amps (Starting/Continuous Operation) | 2.0/0.70 | 3.7/1.0 | 3.7/1.0 | 3.7/1.0 | 3.7/1.0 | 4.0/1.3 | 4.0/1.3 | 4.0/1.3 |
| Service Saver (Self-Diagnostics) | – | – | Yes | – | Yes | – | Yes | Yes |
| Length (in.) | 25.6 | 24.0 | 24.0 | 24.0 | 24.0 | 34.5 | 34.5 | 34.5 |
| Width (in.) | 11.8 | 9.5 | 9.5 | 9.5 | 9.5 | 12.5 | 12.5 | 12.5 |
| Height (in.) | 16.0 | 16.0 | 16.0 | 16.0 | 16.0 | 21.5 | 21.5 | 21.5 |
| Shipping Weight (lbs.) | 28.0 | 34.0 | 34.0 | 34.0 | 34.0 | 51.0 | 51.0 | 55.0 |
| Case Material | Steel w/Baked Enamel | Steel w/Tri-Shield Coating** | Steel w/Tri-Shield Coating** | Steel w/Tri-Shield Coating** | Steel w/Tri-Shield Coating** | Steel w/Tri-Shield Coating** | Steel w/Tri-Shield Coating** | Steel w/Tri-Shield Coating** |
| High Temp Safety Switch | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Air Flow Safety Switch | No | No | Yes | No | Yes | Yes | Yes | Yes |
| Gas Pressure Regulator | S (w/POL) | S (w/POL) | S (w/POL) | S | S | S (w/POL) | S (w/POL) | S (w/POL) |
| Unit Mount Thermostat | *** | S | S | S | S | S | S | S |
| Gas Hose | S | S | S | O | O | S | S | S |
| CSA Certification | US & Canada | US & Canada | US & Canada | US & Canada | US & Canada | US & Canada | US & Canada | US Only |
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