
HL3-20-65
- Gas: Natural or propane
- BTU/h high fire: 65,000
- BTU/h low fire: 50,000
- Length: 21’-9”
- Weight: 120 lbs
- Combustion chamber: aluminized steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 9’ to 14'

HL3-20-75
- Gas: Natural or propane
- BTU/h high fire: 75,000
- BTU/h low fire: 50,000
- Length: 21’-9”
- Weight: 120 lbs
- Combustion chamber: aluminized steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 10’ to 15’

HL3-30-65
- Gas: Natural or propane
- BTU/h high fire: 65,000
- BTU/h low fire: 50,000
- Length: 30’-5”
- Weight: 160 lbs
- Combustion chamber: aluminized steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 10’ to 15’

HL3-30-75
- Gas: Natural or propane
- BTU/h high fire: 75,000
- BTU/h low fire: 50,000
- Length: 31’-5”
- Weight: 160 lbs
- Combustion chamber: aluminized steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 11’ to 18’

HL3-30-100
- Gas: Natural or propane
- BTU/h high fire: 100,000
- BTU/h low fire: 65,000
- Length: 31’-5”
- Weight: 120 lbs
- Combustion chamber: aluminized steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 12’ to 20’

HL3-30-125
- Gas: Natural or propane
- BTU/h high fire: 125,000
- BTU/h low fire: 82,000
- Length: 31’-5”
- Weight: 120 lbs
- Combustion chamber: aluminized steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 13’ to 23’

HL3-40-65
- Gas: Natural or propane
- BTU/h high fire: 65,000
- BTU/h low fire: 50,000
- Length: 41’-1”
- Weight: 190 lbs
- Combustion chamber: aluminized steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 11’ to 18’

HL3-40-75
- Gas: Natural or propane
- BTU/h high fire: 75,000
- BTU/h low fire: 50,000
- Length: 41’-1”
- Weight: 190 lbs
- Combustion chamber: aluminized steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 11’ to 18’

HL3-40-100
- Gas: Natural or propane
- BTU/h high fire: 100,000
- BTU/h low fire: 65,000
- Length: 41’-1”
- Weight: 190 lbs
- Combustion chamber: aluminized steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 12’ to 20’

HL3-40-125
- Gas: Natural or propane
- BTU/h high fire: 125,000
- BTU/h low fire: 82,000
- Length: 41’-1”
- Weight: 190 lbs
- Combustion chamber: aluminized steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 13’ to 23’

HL3-40-150
- Gas: Natural or propane
- BTU/h high fire: 150,000
- BTU/h low fire: 100,000
- Length: 41’-1”
- Weight: 190 lbs
- Combustion chamber: titanium coated steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 14’ to 25’

HL3-40-175
- Gas: Natural or propane
- BTU/h high fire: 175,000
- BTU/h low fire: 125,000
- Length: 41’-1”
- Weight: 190 lbs
- Combustion chamber: titanium coated steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 15’ to 27’

HL3-50-125
- Gas: Natural or propane
- BTU/h high fire: 125,000
- BTU/h low fire: 82,000
- Length: 50’-9”
- Weight: 235 lbs
- Combustion chamber: aluminized steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 15’ to 27’

HL3-50-150
- Gas: Natural or propane
- BTU/h high fire: 150,000
- BTU/h low fire: 100,000
- Length: 50’-9”
- Weight: 235 lbs
- Combustion chamber: titanium coated steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 15’ to 27’

HL3-50-175
- Gas: Natural or propane
- BTU/h high fire: 175,000
- BTU/h low fire: 125,000
- Length: 50’-9”
- Weight: 235 lbs
- Combustion chamber: titanium coated steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 16’ to 30’

HL3-50-200
- Gas: Natural or propane
- BTU/h high fire: 200,000
- BTU/h low fire: 145,000
- Length: 50’-9”
- Weight: 235 lbs
- Combustion chamber: titanium coated steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 17’ to 35’

HL3-60-150
- Gas: Natural or propane
- BTU/h high fire: 150,000
- BTU/h low fire: 100,000
- Length: 60’-5”
- Weight: 265 lbs
- Combustion chamber: titanium coated steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 16’ to 30’

HL3-60-175
- Gas: Natural or propane
- BTU/h high fire: 175,000
- BTU/h low fire: 125,000
- Length: 60’-5”
- Weight: 265 lbs
- Combustion chamber: titanium coated steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 16’ to 30’

HL3-60-200
- Gas: Natural or propane
- BTU/h high fire: 200,000
- BTU/h low fire: 145,000
- Length: 60’-5”
- Weight: 265 lbs
- Combustion chamber: titanium coated steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 17’ to 35’

HL3-70-175
- Gas: Natural or propane
- BTU/h high fire: 175,000
- BTU/h low fire: 125,000
- Length: 70’-1”
- Weight: 300 lbs
- Combustion chamber: titanium coated steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 19’ to 42’

HL3-70-200
- Gas: Natural or propane
- BTU/h high fire: 200,000
- BTU/h low fire: 145,000
- Length: 70’-1”
- Weight: 300 lbs
- Combustion chamber: titanium coated steel
- Radiant emitter tubes: 16 ga. 4” aluminized steel
- *Mounting heights: 19’ to 42’
* Mounting heights are provided as a guideline. Actual conditions may dictate variations from the above data. Always maintain the published clearances to combustibles. Not for residential use.
Clearance to combustibles

HL3-(20, 30, 40)-65, 75
Mount angle |
Sides | Top, Below |
0° |
9" | Top 6" Below 60" |
45° | Front 39" Back 8" | Top 10"
Below 60" |
0° 1 side shield | Front 29"
Back 8" | Top 6"
Below 60" |
0° 2 side shields | 9" | Top 6"
Below 60" |
0° 20 ft from burner | 7" | Top 6"
Below 30" |

HL3-(30, 40)-100
Mount angle |
Sides | Top, Below |
0° |
14" | Top 6" Below 66" |
45° | Front 39" Back 8" | Top 10"
Below 66" |
0° 1 side shield | Front 29"
Back 8" | Top 6"
Below 66" |
0° 2 side shields | 16" | Top 6"
Below 66" |
0° 20 ft from burner | 7" | Top 6"
Below 30" |

HL3-(30, 40, 50)-125
Mount angle |
Sides | Top, Below |
0° |
20" | Top 6" Below 76" |
45° | Front 58" Back 8" | Top 10"
Below 76" |
0° 1 side shield | Front 42"
Back 8" | Top 6"
Below 76" |
0° 2 side shields | 20" | Top 6"
Below 76" |
0° 20 ft from burner | 7" | Top 6"
Below 30" |

HL3-(40, 50, 60)-150
Mount angle |
Sides | Top, Below |
0° |
24" | Top 6" Below 81" |
45° | Front 58" Back 8" | Top 10"
Below 81" |
0° 1 side shield | Front 42"
Back 8" | Top 6"
Below 81" |
0° 2 side shields | 23" | Top 6"
Below 81" |
0° 20 ft from burner | 11" | Top 6"
Below 44" |

HL3-(30, 40, 50, 70)-175
Mount angle |
Sides | Top, Below |
0° |
34" | Top 6" Below 92" |
45° | Front 63" Back 8" | Top 10"
Below 92" |
0° 1 side shield | Front 50"
Back 8" | Top 6"
Below 92" |
0° 2 side shields | 30" | Top 6"
Below 92" |
0° 20 ft from burner | 11" | Top 6"
Below 44" |

HL3-(50, 60, 70)-200
Mount angle |
Sides | Top, Below |
0° |
41" | Top 6" Below 94" |
45° | Front 63" Back 8" | Top 10"
Below 94" |
0° 1 side shield | Front 54"
Back 8" | Top 6"
Below 94" |
0° 2 side shields | 30" | Top 6"
Below 94" |
0° 20 ft from burner | 11" | Top 6"
Below 44" |
Clearances published in HL3 Series manual and on warning label supersede data shown on this webpage. Reference HL3 Series installation manual for complete information.
Heaters mounted on an angle between 0º and 45º must maintain clearances posted for 0º or 45º, whichever is greater.