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Description
Modern 2-Pipe Steam & Hot Water Radiators
Our 2-pipe steam and hot water radiators are designed for efficient, reliable heating in residential and commercial buildings. Built from high-performance aluminum, these modern radiators provide faster heat response, lighter weight, and a cleaner profile than traditional cast iron radiators—making them ideal for both replacements and new installations.
Engineered specifically for 2-pipe steam systems, these radiators are not compatible with 1-pipe steam systems, ensuring proper steam flow, consistent heat output, and long-term system performance.
System Compatibility: Designed exclusively for 2-pipe steam systems and hot water heating systems. Not compatible with 1-pipe steam systems.
Radiator Type: Modern aluminum steam radiator offering fast, even heat distribution with a slim, space-saving profile.
Construction: Manufactured in Italy using high-quality, fully recyclable aluminum for durability, efficiency, and long service life.
Performance: Delivers high heat output with quicker warm-up times compared to traditional cast iron radiators.
Pressure Rating: Pressure tested up to 232 PSI (16 bar) for dependable residential and commercial operation.
Corrosion Protection: Internally treated with an anti-corrosion coating to protect the radiator and heating system.
Installation: Includes wall-mount brackets and mounting hardware. Professional installation by a licensed plumber or HVAC contractor is recommended.
Valves: Radiator valves are sold separately to allow proper matching to your system layout.
Finish: Durable white powder-coat finish designed to complement modern and transitional interiors.
Applications: Ideal for homes and buildings with existing 2-pipe steam systems, hot water systems, renovations, and cast iron radiator replacements.
Warranty: Backed by a 2-year manufacturer warranty.
Shipping: Ships free from Modern Warmth’s U.S. warehouse.
Specs (Steam Systems)
Aleternum B4 350 Dimensions and Heat Output:
| Height (Inches) | Depth (Inches) | Length (Inches) | Weight (lbs) |
Output BTUs @ 194°F AWT | |
| 4-Element | 16.00 | 3.80 | 12.60 | 9.0 | 1872 |
| 6-Element | 16.00 | 3.80 | 18.90 | 13.0 | 2808 |
| 8-Element | 16.00 | 3.80 | 25.20 | 18.0 | 3744 |
| 10-Element | 16.00 | 3.80 | 31.50 | 23.0 | 4680 |
| 12-Element | 16.00 | 3.80 | 37.80 | 28.0 | 5616 |
Aleternum B4 500 Dimensions and Heat Output:
| Height (Inches) | Depth (Inches) | Length (Inches) | Weight (lbs) |
Output BTUs @ 194°F AWT | |
| 4-Element | 22.00 | 3.80 | 12.60 | 12.0 | 2624 |
| 6-Element | 22.00 | 3.80 | 18.90 | 19.0 | 3936 |
| 8-Element | 22.00 | 3.80 | 25.20 | 25.0 | 5248 |
| 10-Element | 22.00 | 3.80 | 31.50 | 31.0 | 6560 |
| 12-Element | 22.00 | 3.80 | 37.80 | 37.0 | 7872 |
Aleternum B4 800 Dimensions and Heat Output:
| Height (Inches) | Depth (Inches) | Length (Inches) | Weight (lbs) |
Output BTUs @ 194°F AWT | |
| 3-Element | 34.00 | 3.80 | 9.45 | 15.0 | 2826 |
| 4-Element | 34.00 | 3.80 | 12.60 | 20.0 | 3768 |
| 8-Element | 34.00 | 3.80 | 24.00 | 40.0 | 7536 |
Specs (Hot Water Systems)
Aleternum B4 350 Dimensions and Heat Output:
| Height (Inches) | Depth (Inches) | Length (Inches) | Weight (lbs) |
Output BTUs @ 176°F AWT | |
| 4-Element | 16.00 | 3.80 | 12.60 | 9.0 | 1544 |
| 6-Element | 16.00 | 3.80 | 18.90 | 13.0 | 2316 |
| 8-Element | 16.00 | 3.80 | 25.20 | 18.0 | 3088 |
| 10-Element | 16.00 | 3.80 | 31.50 | 23.0 | 3860 |
| 12-Element | 16.00 | 3.80 | 37.80 | 28.0 | 4632 |
Aleternum B4 500 Dimensions and Heat Output:
| Height (Inches) | Depth (Inches) | Length (Inches) | Weight (lbs) |
Output BTUs @ 176°F AWT | |
| 4-Element | 22.00 | 3.80 | 12.60 | 12.0 | 2136 |
| 6-Element | 22.00 | 3.80 | 18.90 | 19.0 | 3204 |
| 8-Element | 22.00 | 3.80 | 25.20 | 25.0 | 4272 |
| 10-Element | 22.00 | 3.80 | 31.50 | 31.0 | 5340 |
| 12-Element | 22.00 | 3.80 | 37.80 | 37.0 | 6408 |
Aleternum B4 800 Dimensions and Heat Output:
| Height (Inches) | Depth (Inches) | Length (Inches) | Weight (lbs) |
Output BTUs @ 176°F AWT | |
| 3-Element | 34.00 | 3.80 | 9.45 | 15.0 | 2310 |
| 4-Element | 34.00 | 3.80 | 12.60 | 20.0 | 3080 |
| 8-Element | 34.00 | 3.80 | 24.00 | 40.0 | 6160 |
Description
Modern 2-Pipe Steam & Hot Water Radiators
Our 2-pipe steam and hot water radiators are designed for efficient, reliable heating in residential and commercial buildings. Built from high-performance aluminum, these modern radiators provide faster heat response, lighter weight, and a cleaner profile than traditional cast iron radiators—making them ideal for both replacements and new installations.
Engineered specifically for 2-pipe steam systems, these radiators are not compatible with 1-pipe steam systems, ensuring proper steam flow, consistent heat output, and long-term system performance.
System Compatibility: Designed exclusively for 2-pipe steam systems and hot water heating systems. Not compatible with 1-pipe steam systems.
Radiator Type: Modern aluminum steam radiator offering fast, even heat distribution with a slim, space-saving profile.
Construction: Manufactured in Italy using high-quality, fully recyclable aluminum for durability, efficiency, and long service life.
Performance: Delivers high heat output with quicker warm-up times compared to traditional cast iron radiators.
Pressure Rating: Pressure tested up to 232 PSI (16 bar) for dependable residential and commercial operation.
Corrosion Protection: Internally treated with an anti-corrosion coating to protect the radiator and heating system.
Installation: Includes wall-mount brackets and mounting hardware. Professional installation by a licensed plumber or HVAC contractor is recommended.
Valves: Radiator valves are sold separately to allow proper matching to your system layout.
Finish: Durable white powder-coat finish designed to complement modern and transitional interiors.
Applications: Ideal for homes and buildings with existing 2-pipe steam systems, hot water systems, renovations, and cast iron radiator replacements.
Warranty: Backed by a 2-year manufacturer warranty.
Shipping: Ships free from Modern Warmth’s U.S. warehouse.
Specs (Steam Systems)
Aleternum B4 350 Dimensions and Heat Output:
| Height (Inches) | Depth (Inches) | Length (Inches) | Weight (lbs) |
Output BTUs @ 194°F AWT | |
| 4-Element | 16.00 | 3.80 | 12.60 | 9.0 | 1872 |
| 6-Element | 16.00 | 3.80 | 18.90 | 13.0 | 2808 |
| 8-Element | 16.00 | 3.80 | 25.20 | 18.0 | 3744 |
| 10-Element | 16.00 | 3.80 | 31.50 | 23.0 | 4680 |
| 12-Element | 16.00 | 3.80 | 37.80 | 28.0 | 5616 |
Aleternum B4 500 Dimensions and Heat Output:
| Height (Inches) | Depth (Inches) | Length (Inches) | Weight (lbs) |
Output BTUs @ 194°F AWT | |
| 4-Element | 22.00 | 3.80 | 12.60 | 12.0 | 2624 |
| 6-Element | 22.00 | 3.80 | 18.90 | 19.0 | 3936 |
| 8-Element | 22.00 | 3.80 | 25.20 | 25.0 | 5248 |
| 10-Element | 22.00 | 3.80 | 31.50 | 31.0 | 6560 |
| 12-Element | 22.00 | 3.80 | 37.80 | 37.0 | 7872 |
Aleternum B4 800 Dimensions and Heat Output:
| Height (Inches) | Depth (Inches) | Length (Inches) | Weight (lbs) |
Output BTUs @ 194°F AWT | |
| 3-Element | 34.00 | 3.80 | 9.45 | 15.0 | 2826 |
| 4-Element | 34.00 | 3.80 | 12.60 | 20.0 | 3768 |
| 8-Element | 34.00 | 3.80 | 24.00 | 40.0 | 7536 |
Specs (Hot Water Systems)
Aleternum B4 350 Dimensions and Heat Output:
| Height (Inches) | Depth (Inches) | Length (Inches) | Weight (lbs) |
Output BTUs @ 176°F AWT | |
| 4-Element | 16.00 | 3.80 | 12.60 | 9.0 | 1544 |
| 6-Element | 16.00 | 3.80 | 18.90 | 13.0 | 2316 |
| 8-Element | 16.00 | 3.80 | 25.20 | 18.0 | 3088 |
| 10-Element | 16.00 | 3.80 | 31.50 | 23.0 | 3860 |
| 12-Element | 16.00 | 3.80 | 37.80 | 28.0 | 4632 |
Aleternum B4 500 Dimensions and Heat Output:
| Height (Inches) | Depth (Inches) | Length (Inches) | Weight (lbs) |
Output BTUs @ 176°F AWT | |
| 4-Element | 22.00 | 3.80 | 12.60 | 12.0 | 2136 |
| 6-Element | 22.00 | 3.80 | 18.90 | 19.0 | 3204 |
| 8-Element | 22.00 | 3.80 | 25.20 | 25.0 | 4272 |
| 10-Element | 22.00 | 3.80 | 31.50 | 31.0 | 5340 |
| 12-Element | 22.00 | 3.80 | 37.80 | 37.0 | 6408 |
Aleternum B4 800 Dimensions and Heat Output:
| Height (Inches) | Depth (Inches) | Length (Inches) | Weight (lbs) |
Output BTUs @ 176°F AWT | |
| 3-Element | 34.00 | 3.80 | 9.45 | 15.0 | 2310 |
| 4-Element | 34.00 | 3.80 | 12.60 | 20.0 | 3080 |
| 8-Element | 34.00 | 3.80 | 24.00 | 40.0 | 6160 |
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